Temporary disable sync for release builds

app/src/debug/res/values/bools.xml

@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources xmlns:tools="http://schemas.android.com/tools">
 	<bool name="leak_canary_add_launcher_icon" tools:node="replace">false</bool>
+	<bool name="is_sync_enabled">true</bool>
 </resources>

app/src/main/java/org/koitharu/kotatsu/sync/ui/favourites/FavouritesSyncAdapter.kt

@@ -6,6 +6,7 @@ import android.content.ContentProviderClient
 import android.content.Context
 import android.content.SyncResult
 import android.os.Bundle
+import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.sync.domain.SyncController
 import org.koitharu.kotatsu.sync.domain.SyncHelper
 import org.koitharu.kotatsu.utils.ext.onError
@@ -20,6 +21,9 @@ class FavouritesSyncAdapter(context: Context) : AbstractThreadedSyncAdapter(cont
 		provider: ContentProviderClient,
 		syncResult: SyncResult,
 	) {
+		if (!context.resources.getBoolean(R.bool.is_sync_enabled)) {
+			return
+		}
 		val syncHelper = SyncHelper(context, account, provider)
 		runCatchingCancellable {
 			syncHelper.syncFavourites(syncResult)

app/src/main/java/org/koitharu/kotatsu/sync/ui/history/HistorySyncAdapter.kt

@@ -6,6 +6,7 @@ import android.content.ContentProviderClient
 import android.content.Context
 import android.content.SyncResult
 import android.os.Bundle
+import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.sync.domain.SyncController
 import org.koitharu.kotatsu.sync.domain.SyncHelper
 import org.koitharu.kotatsu.utils.ext.onError
@@ -20,6 +21,9 @@ class HistorySyncAdapter(context: Context) : AbstractThreadedSyncAdapter(context
 		provider: ContentProviderClient,
 		syncResult: SyncResult,
 	) {
+		if (!context.resources.getBoolean(R.bool.is_sync_enabled)) {
+			return
+		}
 		val syncHelper = SyncHelper(context, account, provider)
 		runCatchingCancellable {
 			syncHelper.syncHistory(syncResult)

app/src/main/res/values/bools.xml

@@ -5,4 +5,5 @@
 	<bool name="light_navigation_bar">false</bool>
 	<bool name="com_samsung_android_icon_container_has_icon_container">true</bool>
 	<bool name="is_color_themes_available">false</bool>
+	<bool name="is_sync_enabled">false</bool>
 </resources>

app/src/main/res/xml/pref_services.xml

@@ -4,6 +4,7 @@
 	xmlns:app="http://schemas.android.com/apk/res-auto">
 
 	<Preference
+		android:enabled="@bool/is_sync_enabled"
 		android:key="sync"
 		android:persistent="false"
 		android:summary="@string/sync_title"