chore(android): enable WebView debugging and a local debug-APK build script

Lets chrome://inspect attach to the WebView in debug builds, and adds
cap:android:build:debug for producing a sideloadable debug APK without
signing credentials.

Author: pepakriz

android/app/build.gradle

@@ -22,6 +22,9 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
+    buildFeatures {
+        buildConfig true
+    }
 }
 
 repositories {

android/app/src/main/java/me/payky/MainActivity.java

@@ -5,6 +5,7 @@
 import android.os.Bundle;
 import android.view.Window;
 import android.view.WindowManager;
+import android.webkit.WebView;
 import androidx.core.view.WindowCompat;
 import androidx.core.view.WindowInsetsControllerCompat;
 import com.getcapacitor.BridgeActivity;
@@ -15,6 +16,10 @@ public class MainActivity extends BridgeActivity {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         enableEdgeToEdge();
+
+        if (BuildConfig.DEBUG) {
+            WebView.setWebContentsDebuggingEnabled(true);
+        }
     }
 
     private void enableEdgeToEdge() {

package.json

@@ -14,6 +14,7 @@
     "cap:android:sync": "bun run cap:build && cap sync android",
     "cap:android:dev": "PAYKY_DISABLE_BASIC_SSL=1 bun run dev -- --host 0.0.0.0 --strictPort & PAYKY_VITE_PID=$!; trap 'kill $PAYKY_VITE_PID' EXIT; until curl -sSf http://127.0.0.1:5173 >/dev/null; do kill -0 $PAYKY_VITE_PID || exit 1; sleep 0.25; done; cap run android --live-reload --host 127.0.0.1 --port 5173 --forwardPorts 5173:5173; wait $PAYKY_VITE_PID",
     "cap:android:build": "bun run cap:android:build:apk",
+    "cap:android:build:debug": "bun run cap:android:sync && cd android && ./gradlew assembleDebug",
     "cap:android:build:apk": ": ${PAYKY_ANDROID_KEYSTORE_PASSWORD:?Set PAYKY_ANDROID_KEYSTORE_PASSWORD} && : ${PAYKY_ANDROID_KEY_ALIAS:?Set PAYKY_ANDROID_KEY_ALIAS} && : ${PAYKY_ANDROID_KEY_PASSWORD:?Set PAYKY_ANDROID_KEY_PASSWORD} && bun run cap:android:sync && cap build android --androidreleasetype APK --signing-type apksigner --keystorepath ../payky-release.keystore --keystorepass \"$PAYKY_ANDROID_KEYSTORE_PASSWORD\" --keystorealias \"$PAYKY_ANDROID_KEY_ALIAS\" --keystorealiaspass \"$PAYKY_ANDROID_KEY_PASSWORD\"",
     "cap:android:build:aab": ": ${PAYKY_ANDROID_KEYSTORE_PASSWORD:?Set PAYKY_ANDROID_KEYSTORE_PASSWORD} && : ${PAYKY_ANDROID_KEY_ALIAS:?Set PAYKY_ANDROID_KEY_ALIAS} && : ${PAYKY_ANDROID_KEY_PASSWORD:?Set PAYKY_ANDROID_KEY_PASSWORD} && bun run cap:android:sync && cap build android --androidreleasetype AAB --keystorepath ../payky-release.keystore --keystorepass \"$PAYKY_ANDROID_KEYSTORE_PASSWORD\" --keystorealias \"$PAYKY_ANDROID_KEY_ALIAS\" --keystorealiaspass \"$PAYKY_ANDROID_KEY_PASSWORD\"",
     "check:lint": "biome check .",