[Gradle] Add non-Play flavor without self-updater.

app/src/play/java/pl/szczodrzynski/edziennik/sync/UpdateDownloaderService.kt

@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2022-2-21.
+ */
+
+package pl.szczodrzynski.edziennik.sync
+
+import android.app.IntentService
+import android.content.Intent
+import android.widget.Toast
+import pl.szczodrzynski.edziennik.utils.Utils
+
+class UpdateDownloaderService : IntentService(UpdateDownloaderService::class.java.simpleName) {
+
+    override fun onHandleIntent(intent: Intent?) {
+        try {
+            Utils.openGooglePlay(this, application.packageName)
+        }
+        catch (e: Exception) {
+            e.printStackTrace()
+            Toast.makeText(this, "Nie znaleziono Google Play. Pobierz aktualizację ręcznie.", Toast.LENGTH_SHORT).show()
+        }
+    }
+}