feat: add live listener count

websocket_connection_manager.py

@@ -0,0 +1,19 @@
+import asyncio
+from fastapi import WebSocket
+
+
+class WebSocketConnectionManager:
+    def __init__(self) -> None:
+        self.__active_connections: list[WebSocket] = []
+
+    async def connect(self, ws: WebSocket):
+        await ws.accept()
+        self.__active_connections.append(ws)
+
+    def disconnect(self, ws: WebSocket):
+        self.__active_connections.remove(ws)
+
+    async def broadcast(self, msg: str):
+        await asyncio.gather(
+            *[conn.send_text(msg) for conn in self.__active_connections]
+        )