Fix WorkManager init crash

```
Caused by java.lang.IllegalStateException: WorkManager is not initialized properly.  You have explicitly disabled WorkManagerInitializer in your manifest, have not manually called WorkManager#initialize at this point, and your Application does not implement Configuration.Provider.
  at androidx.work.impl.WorkManagerImpl.getInstance (WorkManagerImpl.java)
  at androidx.work.impl.foreground.SystemForegroundDispatcher.<init> (SystemForegroundDispatcher.java)
  at androidx.work.impl.foreground.SystemForegroundService.initializeDispatcher (SystemForegroundService.java)
  at androidx.work.impl.foreground.SystemForegroundService.onCreate (SystemForegroundService.java)
  at android.app.ActivityThread.handleCreateService (ActivityThread.java:4726)
```

Author: d4rken

app/src/main/AndroidManifest.xml

@@ -94,7 +94,15 @@
         <provider
             android:name="androidx.startup.InitializationProvider"
             android:authorities="${applicationId}.androidx-startup"
-            tools:node="remove" />
+            android:exported="false"
+            tools:node="merge">
+
+            <meta-data
+                android:name="androidx.work.WorkManagerInitializer"
+                android:value="androidx.startup"
+                tools:node="remove" />
+
+        </provider>
     </application>
 
 </manifest>