[rh:websockets] Migrate websockets to networking framework (#7720)

* Adds a basic WebSocket framework
* Introduces new minimum `websockets` version of 12.0
* Deprecates `WebSocketsWrapper`

Fixes https://github.com/yt-dlp/yt-dlp/issues/8439

Authored by: coletdjnz

yt_dlp/networking/websocket.py

@@ -0,0 +1,23 @@
+from __future__ import annotations
+
+import abc
+
+from .common import Response, RequestHandler
+
+
+class WebSocketResponse(Response):
+
+    def send(self, message: bytes | str):
+        """
+        Send a message to the server.
+
+        @param message: The message to send. A string (str) is sent as a text frame, bytes is sent as a binary frame.
+        """
+        raise NotImplementedError
+
+    def recv(self):
+        raise NotImplementedError
+
+
+class WebSocketRequestHandler(RequestHandler, abc.ABC):
+    pass