Consolidate gradle config and publishing

- Add gradle/libs.versions.toml for plugin/dependency versions
- Move common Android library/application config (compileSdk,
  minSdk, JVM 17, compose, testOptions) to subprojects blocks
  in the root build script
- Extract shared Maven Central publishing into
  gradle/publishing.gradle.kts (parameterized by artifactId,
  name, description)
- Extract Robolectric + standard exclusion list into
  gradle/robolectric.gradle.kts

Net: -529 lines across module build files.

Closes #113, #114

Author: hopeman15

app/build.gradle.kts

@@ -1,27 +1,23 @@
 import com.github.triplet.gradle.androidpublisher.ReleaseStatus
 import com.github.triplet.gradle.androidpublisher.ResolutionStrategy
-import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 
 plugins {
-    id("com.android.application")
-    id("org.jetbrains.kotlin.android")
-    id("org.jetbrains.kotlin.plugin.compose")
-    id("com.github.triplet.play") version "3.13.0"
+    alias(libs.plugins.android.application)
+    alias(libs.plugins.kotlin.android)
+    alias(libs.plugins.kotlin.compose)
+    alias(libs.plugins.play.publisher)
 }
 
 android {
     namespace = "com.hello.curiosity"
-    compileSdk = 35
 
     defaultConfig {
         applicationId = "com.hello.curiosity.design"
-        minSdk = 23
         targetSdk = 35
 
         versionCode = System.getenv("GITHUB_RUN_NUMBER")?.toInt() ?: 1
         versionName = System.getenv("VERSION") ?: "local"
 
-        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables {
             useSupportLibrary = true
         }
@@ -47,7 +43,7 @@ android {
             signingConfig = signingConfigs.getByName("release")
             proguardFiles(
                 getDefaultProguardFile("proguard-android-optimize.txt"),
-                "proguard-rules.pro"
+                "proguard-rules.pro",
             )
         }
     }
@@ -63,94 +59,44 @@ android {
         artifactDir.set(file("build/outputs/bundle/release"))
     }
 
-    compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_17
-        targetCompatibility = JavaVersion.VERSION_17
-    }
-
-    kotlin {
-        compilerOptions {
-            jvmTarget.set(JvmTarget.JVM_17)
-        }
-    }
-
-    buildFeatures {
-        compose = true
-    }
-
     packaging {
         resources {
             excludes += "/META-INF/{AL2.0,LGPL2.1}"
         }
     }
-
-    testOptions {
-        unitTests {
-            isIncludeAndroidResources = true
-            isReturnDefaultValues = true
-        }
-    }
 }
 
 dependencies {
-    // Android
-    implementation("androidx.core:core-ktx:1.16.0")
-
-    // Compose
-    implementation("androidx.activity:activity-compose:1.10.1")
-    implementation("androidx.compose.material:material:1.11.0")
-    implementation("androidx.compose.material:material-icons-extended:1.7.8")
-    implementation("androidx.navigation:navigation-compose:2.9.8")
-    debugImplementation("androidx.compose.ui:ui-tooling:1.11.0")
-    implementation("androidx.compose.ui:ui-tooling-preview:1.11.0")
-    implementation("androidx.compose.ui:ui:1.11.0")
-
-    // Curiosity
+    implementation(libs.androidx.core.ktx)
+
+    implementation(libs.androidx.activity.compose)
+    implementation(libs.androidx.compose.material)
+    implementation(libs.androidx.compose.material.icons.extended)
+    implementation(libs.androidx.navigation.compose)
+    implementation(libs.androidx.compose.ui)
+    implementation(libs.androidx.compose.ui.tooling.preview)
+    debugImplementation(libs.androidx.compose.ui.tooling)
+
     implementation(project(":curiosity"))
     implementation(project(":navigation"))
     implementation(project(":settings"))
 
-    // Leak
-    debugImplementation("com.squareup.leakcanary:leakcanary-android:2.14")
+    debugImplementation(libs.leakcanary.android)
 
-    // Testing
-    testImplementation("junit:junit:4.13.2")
-
-    // Curiosity testing utils
+    testImplementation(libs.junit)
     testImplementation(project(":test-compose-utils"))
+    testImplementation(libs.androidx.compose.ui.test.junit4)
+    testImplementation(libs.androidx.navigation.testing)
+    debugImplementation(libs.androidx.compose.ui.test.manifest)
 
-    // Compose
-    debugImplementation("androidx.compose.ui:ui-test-manifest:1.11.0")
-    testImplementation("androidx.compose.ui:ui-test-junit4:1.11.0")
-    testImplementation("androidx.navigation:navigation-testing:2.9.8")
-
-    // Robolectric
-    testImplementation("org.robolectric:robolectric:4.16.1") {
-        exclude(module = "classworlds")
-        exclude(module = "commons-logging")
-        exclude(module = "httpclient")
-        exclude(module = "maven-artifact")
-        exclude(module = "maven-artifact-manager")
-        exclude(module = "maven-error-diagnostics")
-        exclude(module = "maven-model")
-        exclude(module = "maven-project")
-        exclude(module = "maven-settings")
-        exclude(module = "plexus-container-default")
-        exclude(module = "plexus-interpolation")
-        exclude(module = "plexus-utils")
-        exclude(module = "wagon-file")
-        exclude(module = "wagon-http-lightweight")
-        exclude(module = "wagon-provider-api")
-        exclude(module = "auto-service")
-    }
-
-    // Android Testing
-    androidTestImplementation("androidx.test.espresso:espresso-core:3.7.0")
-    androidTestImplementation("androidx.test.ext:junit:1.3.0")
-    androidTestImplementation("androidx.compose.ui:ui-test-junit4:1.11.0")
+    androidTestImplementation(libs.androidx.test.espresso.core)
+    androidTestImplementation(libs.androidx.test.ext.junit)
+    androidTestImplementation(libs.androidx.compose.ui.test.junit4)
 }
 
-// Kover
+extra["robolectricConfiguration"] = "testImplementation"
+apply(from = "$rootDir/gradle/robolectric.gradle.kts")
+
 dependencies {
     kover(project(":curiosity"))
     kover(project(":navigation"))

build.gradle.kts

@@ -1,20 +1,22 @@
+import com.android.build.api.dsl.ApplicationExtension
+import com.android.build.api.dsl.CommonExtension
+import com.android.build.api.dsl.LibraryExtension
 import io.gitlab.arturbosch.detekt.Detekt
 import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+import org.jetbrains.kotlin.gradle.dsl.KotlinAndroidProjectExtension
+import org.jetbrains.kotlin.gradle.dsl.KotlinJvmProjectExtension
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
-buildscript {
-
-}// Top-level build file where you can add configuration options common to all sub-projects/modules.
-
 plugins {
-    id("com.android.application") version "8.13.2" apply false
-    id("com.android.library") version "8.13.2" apply false
-    id("org.jetbrains.kotlin.android") version "2.3.21" apply false
-    id("org.jetbrains.kotlin.plugin.compose") version "2.3.21" apply false
+    alias(libs.plugins.android.application) apply false
+    alias(libs.plugins.android.library) apply false
+    alias(libs.plugins.kotlin.android) apply false
+    alias(libs.plugins.kotlin.compose) apply false
+    alias(libs.plugins.kotlin.serialization) apply false
 
-    id("io.gitlab.arturbosch.detekt") version "1.23.8"
-    id("org.jmailen.kotlinter") version "5.4.2"
-    id("org.jetbrains.kotlinx.kover") version "0.9.8"
+    alias(libs.plugins.detekt)
+    alias(libs.plugins.kotlinter)
+    alias(libs.plugins.kover)
 }
 
 allprojects {
@@ -42,6 +44,71 @@ allprojects {
     }
 }
 
+fun CommonExtension<*, *, *, *, *, *>.configureAndroidCommon() {
+    compileSdk = 35
+    defaultConfig {
+        minSdk = 23
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
+    buildFeatures {
+        compose = true
+    }
+    testOptions {
+        unitTests {
+            isIncludeAndroidResources = true
+            isReturnDefaultValues = true
+        }
+    }
+}
+
+subprojects {
+    plugins.withId("com.android.application") {
+        extensions.configure<ApplicationExtension>("android") {
+            configureAndroidCommon()
+        }
+    }
+
+    plugins.withId("com.android.library") {
+        extensions.configure<LibraryExtension>("android") {
+            configureAndroidCommon()
+            defaultConfig {
+                targetSdk = 35
+            }
+            buildTypes {
+                release {
+                    isMinifyEnabled = false
+                }
+            }
+            publishing {
+                singleVariant("release") {
+                    withSourcesJar()
+                    withJavadocJar()
+                }
+            }
+        }
+    }
+
+    plugins.withId("org.jetbrains.kotlin.android") {
+        extensions.configure<KotlinAndroidProjectExtension>("kotlin") {
+            compilerOptions {
+                jvmTarget.set(JvmTarget.JVM_17)
+            }
+        }
+    }
+
+    plugins.withId("org.jetbrains.kotlin.jvm") {
+        extensions.configure<KotlinJvmProjectExtension>("kotlin") {
+            compilerOptions {
+                jvmTarget.set(JvmTarget.JVM_17)
+            }
+        }
+    }
+}
+
 tasks.register<Delete>("clean") {
     delete(rootProject.layout.buildDirectory)
 }
@@ -52,7 +119,6 @@ tasks.withType<KotlinCompile> {
     }
 }
 
-// Kover
 dependencies {
     kover(project(":app"))
     kover(project(":slack-feedback"))