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/services.yaml

@@ -24,6 +24,15 @@ get_assets:
           min: 1
           max: 100
           mode: slider
+    offset:
+      name: Offset
+      description: Number of assets to skip before returning results (for pagination). Use with limit to fetch assets in pages.
+      required: false
+      default: 0
+      selector:
+        number:
+          min: 0
+          mode: box
     favorite_only:
       name: Favorite Only
       description: Filter to show only favorite assets.
@@ -95,6 +104,30 @@ get_assets:
       required: false
       selector:
         text:
+    on_this_day:
+      name: On This Day
+      description: Filter assets by matching month and day (memories/anniversary filter). Provide a date in ISO 8601 format (e.g., 2024-02-14) to get all assets taken on February 14th of any year.
+      required: false
+      selector:
+        text:
+    city:
+      name: City
+      description: Filter assets by city name (case-insensitive substring match). Based on reverse geocoded location from asset GPS data.
+      required: false
+      selector:
+        text:
+    state:
+      name: State
+      description: Filter assets by state/region name (case-insensitive substring match). Based on reverse geocoded location from asset GPS data.
+      required: false
+      selector:
+        text:
+    country:
+      name: Country
+      description: Filter assets by country name (case-insensitive substring match). Based on reverse geocoded location from asset GPS data.
+      required: false
+      selector:
+        text:
 
 send_telegram_notification:
   name: Send Telegram Notification