Re-architecture of the Godot Android plugin.

platform/android/java/app/AndroidManifest.xml

@@ -6,9 +6,6 @@
     android:versionName="1.0"
     android:installLocation="auto" >
 
-    <!-- Adding custom text to the manifest is fine, but do it outside the custom USER and APPLICATION BEGIN/END comments, -->
-    <!-- as that gets rewritten. -->
-
     <supports-screens
         android:smallScreens="true"
         android:normalScreens="true"
@@ -19,14 +16,11 @@
         android:glEsVersion="0x00020000"
         android:required="true" />
 
-<!-- Custom user permissions XML added by add-ons. It's recommended to add them from the export preset, though. -->
-<!--CHUNK_USER_PERMISSIONS_BEGIN-->
-<!--CHUNK_USER_PERMISSIONS_END-->
-
-    <!-- Any tag in this line after android:icon will be erased when doing custom builds. -->
-    <!-- If you want to add tags manually, do before it. -->
-    <!-- WARNING: This should stay on a single line until the parsing code is improved. See GH-32414. -->
-    <application android:label="@string/godot_project_name_string" android:allowBackup="false" tools:ignore="GoogleAppIndexingWarning" android:icon="@mipmap/icon" >
+    <application
+        android:label="@string/godot_project_name_string"
+        android:allowBackup="false"
+        tools:ignore="GoogleAppIndexingWarning"
+        android:icon="@mipmap/icon" >
 
         <!-- The following metadata values are replaced when Godot exports, modifying them here has no effect. -->
         <!-- Do these changes in the export preset. Adding new ones is fine. -->
@@ -36,6 +30,11 @@
             android:name="xr_mode_metadata_name"
             android:value="xr_mode_metadata_value" />
 
+        <!-- Metadata populated at export time and used by Godot to figure out which plugins must be enabled. -->
+        <meta-data
+            android:name="custom_template_plugins"
+            android:value="custom_template_plugins_value"/>
+
         <activity
             android:name=".GodotApp"
             android:label="@string/godot_project_name_string"
@@ -52,10 +51,6 @@
             </intent-filter>
         </activity>
 
-<!-- Custom application XML added by add-ons. -->
-<!--CHUNK_APPLICATION_BEGIN-->
-<!--CHUNK_APPLICATION_END-->
-
     </application>
 
 </manifest>