Enhance get_assets service with flexible filtering and sorting

- Replace filter parameter with independent favorite_only boolean
- Add order_by parameter supporting date, rating, and name sorting
- Rename count to limit for clarity
- Add date range filtering with min_date and max_date parameters
- Add asset_type filtering for photos and videos
- Update README with language support section and fixed sensor list
- Add translations for all new parameters

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

custom_components/immich_album_watcher/manifest.json

@@ -8,5 +8,5 @@
     "iot_class": "cloud_polling",
     "issue_tracker": "https://github.com/DolgolyovAlexei/haos-hacs-immich-album-watcher/issues",
     "requirements": [],
-    "version": "2.1.0"
+    "version": "2.2.0"
 }