Add Notification Filters for Seen and Priority

- Introduced new optional fields in the SearchForm for filtering notifications by 'seen' status and 'priority', enhancing the flexibility of notification retrieval.
- Updated the GetNotifications method in the notification service to accommodate the new filters, ensuring they are included in the query parameters.
- Enhanced the notification client to support the new filters in API requests, improving the overall functionality of the notification system.
- Updated API documentation with Swagger comments to reflect the new query parameters, ensuring clarity for API consumers.

docs/fcm/google-services.json

@@ -0,0 +1,29 @@
+{
+  "project_info": {
+    "project_number": "6923326255",
+    "project_id": "opplens-270d1",
+    "storage_bucket": "opplens-270d1.firebasestorage.app"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:6923326255:android:6704c5b71e4451abed87da",
+        "android_client_info": {
+          "package_name": "com.opplens.app"
+        }
+      },
+      "oauth_client": [],
+      "api_key": [
+        {
+          "current_key": "AIzaSyCqZ6B5iih0RdFj0lf5_erwbZvMyb7obEg"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": []
+        }
+      }
+    }
+  ],
+  "configuration_version": "1"
+}