[Glitch] upgrade/replace websocket.js to @gamestdio/websocket v2

Port 80a3e8e0e4 to glitch-soc

Co-authored-by: hina <hina@hinaloe.net>
Signed-off-by: Thibaut Girka <thib@sitedethib.com>

app/javascript/flavours/glitch/util/stream.js

@@ -1,4 +1,4 @@
-import WebSocketClient from 'websocket.js';
+import WebSocketClient from '@gamestdio/websocket';
 
 const randomIntUpTo = max => Math.floor(Math.random() * Math.floor(max));