chore(connectors): add category and search validation fields

server/connectors/registry.py

@@ -18,8 +18,13 @@ def _discover_connectors() -> list[type[BaseConnector]]:
 def get_available_connectors() -> dict[str, type[BaseConnector]]:
     return {c.source_name: c for c in _discover_connectors() if c.is_available()}
 
-def get_connector_metadata() -> list[dict]:
-    return [
-        {"id": id, "label": obj.display_name}
-        for id, obj in get_available_connectors().items()
-    ]
+def get_connector_metadata() -> dict[str, dict]:
+    res = {}
+    for id, obj in get_available_connectors().items():
+        res[id] = {"id": id, 
+                   "label": obj.display_name, 
+                   "search_enabled": obj.search_enabled, 
+                   "categories_enabled": obj.categories_enabled
+                   }
+
+    return res