build(jreleaser): use enum-based Active/Signing and aggregate subprojects staging for multi-module release

Author: drallgood

build-logic/src/main/kotlin/de.brendamour.java-conventions.gradle.kts

@@ -1,7 +1,8 @@
 import java.util.*
+import org.gradle.api.publish.maven.MavenPublication
 import org.jreleaser.model.Active
 import org.jreleaser.model.Signing
-import org.gradle.api.publish.maven.MavenPublication
+import org.gradle.api.Project
 import org.gradle.api.tasks.compile.JavaCompile
 import org.gradle.api.tasks.javadoc.Javadoc
 import org.gradle.api.tasks.wrapper.Wrapper
@@ -111,35 +112,36 @@ if (project == rootProject) {
         }
 
         signing {
-            active.set("ALWAYS")
+            active.set(Active.ALWAYS)
             armored.set(true)
             command {
                 executable.set("gpg")
                 args.set(listOf("--batch", "--yes", "--pinentry-mode", "loopback"))
                 keyName.set("9474B9FCBDF93BEE7CC4B69B4CE3C3B7A5E5FCC2")
             }
-            mode.set("COMMAND")
+            mode.set(Signing.Mode.COMMAND)
         }
 
         deploy {
             maven {
-                val stagingPaths = (listOf(project) + project.subprojects).map { p ->
+                val projs: List<Project> = listOf(rootProject) + rootProject.subprojects.toList()
+                val stagingPaths: List<String> = projs.map { p: Project ->
                     p.layout.buildDirectory.dir("staging-deploy").get().asFile.absolutePath
                 }
                 mavenCentral {
                     create("release-deploy") {
-                        active.set("RELEASE")
+                        active.set(Active.RELEASE)
                         url.set("https://central.sonatype.com/api/v1/publisher")
-                        stagingRepositories.set(stagingPaths)
+                        stagingRepositories.set(providers.provider { stagingPaths })
                         applyMavenCentralRules.set(true)
                     }
                 }
                 nexus2 {
                     create("snapshot-deploy") {
-                        active.set("SNAPSHOT")
+                        active.set(Active.SNAPSHOT)
                         url.set("https://central.sonatype.com/api/v1/publisher")
                         snapshotUrl.set("https://central.sonatype.com/repository/maven-snapshots")
-                        stagingRepositories.set(stagingPaths)
+                        stagingRepositories.set(providers.provider { stagingPaths })
                         applyMavenCentralRules.set(true)
                         closeRepository.set(true)
                         snapshotSupported.set(true)