This mod enables modern player information forwarding in NeoForge servers for use with Velocity and also includes a port of CrossStitch as it is necessary to make modded commands work.
Currently, there is nothing similar out there what enables the given functionality.
Copy appropriate jar to your server mods folder and run the server once. Stop the server and go to config/neoforwarding-server.toml and insert your forwarding secret and set "enableForwarding" to true.
If there is anything wrong with the code used, message me.