feat: support forwarded headers for websocket

[jclab-joseph]

Fixes https://github.com/libp2p/go-libp2p/issues/1437 Also https://github.com/ipfs/kubo/issues/8193

Avoid connection limit issues when there is an ipfs websocket behind a proxy. Kubo Log:

DEBUG   upgrader        upgrader/listener.go:99 resource manager blocked accept of new connection       {"error": "connections per ip limit exceeded for /ip4/10.42.111.111/tcp/38108/ws"}