Deprecate methods for testing purposes

[TrackRecordingService]: Deprecate methods for testing purposes

- Added `@Deprecated` annotation to `getTrackPointCreator()` and `getTrackRecordingManager()` methods.
  - `since`: 14.0.0
  - `forRemoval`: true

These methods are deprecated for testing purposes only and are currently marked for removal.

src/main/java/de/dennisguse/opentracks/services/TrackRecordingService.java

@@ -285,7 +285,7 @@ public Marker.Id insertMarker(String name, String category, String description,
         return trackRecordingManager.insertMarker(name, category, description, photoUrl);
     }
 
-    @Deprecated
+    @Deprecated(since = "14.0.0", forRemoval = true)
     @VisibleForTesting
     public TrackPointCreator getTrackPointCreator() {
         return trackPointCreator;
@@ -354,4 +354,4 @@ public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, @Null
         trackPointCreator.onSharedPreferenceChanged(sharedPreferences, key);
         notificationManager.onSharedPreferenceChanged(sharedPreferences, key);
     }
-}
+}