I’d never heard of this, so I looked:
These scripts empower users to create a Linux container or virtual machine interactively, providing choices for both simple and advanced configurations.
Isn’t this what the native Proxmox web interface already does?
Regular nginx does this just fine https://docs.nginx.com/nginx/admin-guide/load-balancer/tcp-udp-load-balancer/
Keep in mind that you can’t route tcp by hostname, because hostname is not a property of tcp. It only knows IP addresses. Host routing requires a protocol like HTTP.