Implement MSC4367 room directory

vona/federation/__init__.py

@@ -347,10 +347,7 @@ async def make_join(roomId, userId):
 
 @server.route("/_matrix/federation/v1/publicRooms", methods=["POST", "GET"])
 async def room_directory():
-	return jsonify({
-		"chunk": [],
-		"total_room_count_estimate": 0
-	})
+	return jsonify(globals.room_dir)
 
 
 # https://spec.matrix.org/latest/server-server-api/#transactions