Add get_assets filtering: offset, on_this_day, city, state, country

- Add offset parameter for pagination support
- Add on_this_day parameter for memories filtering (match month and day)
- Add city, state, country parameters for geolocation filtering
- Update README with new parameters and examples

Co-Authored-By: Claude Opus 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": "2.6.0"
+    "version": "2.7.0"
 }