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/translations/en.json

@@ -143,6 +143,10 @@
                     "name": "Limit",
                     "description": "Maximum number of assets to return (1-100)."
                 },
+                "offset": {
+                    "name": "Offset",
+                    "description": "Number of assets to skip (for pagination)."
+                },
                 "favorite_only": {
                     "name": "Favorite Only",
                     "description": "Filter to show only favorite assets."
@@ -170,6 +174,22 @@
                 "max_date": {
                     "name": "Maximum Date",
                     "description": "Filter assets created on or before this date (ISO 8601 format)."
+                },
+                "on_this_day": {
+                    "name": "On This Day",
+                    "description": "Filter assets by matching month and day (memories/anniversary filter)."
+                },
+                "city": {
+                    "name": "City",
+                    "description": "Filter assets by city name (case-insensitive)."
+                },
+                "state": {
+                    "name": "State",
+                    "description": "Filter assets by state/region name (case-insensitive)."
+                },
+                "country": {
+                    "name": "Country",
+                    "description": "Filter assets by country name (case-insensitive)."
                 }
             }
         },