[Feature Request] Option to announce forge for virtual hosts on proxies

[KairuByte]

Is your feature request related to a problem? Please describe. When connecting with a Forge client, a forge virtual host is declared as vanilla, even if the back end server is running mods.

Describe the solution you'd like Allow specifying vanilla/forge(/other?) on these virtual host entries.

Describe alternatives you've considered Ping passthrough handles the situation, but that defeats the purpose of MiniMOTD.