support 302 redirect

Describe the feature

support 302 redirect

Describe the reason for such feature

my server IP and port change frequently, so I have to update 302 redirect using Cloudflare Rules by webhook, If wstunnel supports the redirect feature, it can auto reconnect to the new port after the port changes.

# Server is behind NAT, maybe public port is 7123
./wstunnel server ws://0.0.0.0:7000

./wstunnel client -R tcp://0.0.0.0:7001:127.0.0.1:8080 ws://server2.com:8000

when access ws://server2.com:8000, will redirect to ws://server1.com:7123 if port change to 8456, still access ws://server2.com:8000, it will redirect to ws://server1.com:8456

Describe alternatives you've considered

A clear and concise description of any alternative solutions or features you've considered.