I could set up something temporary for the jam, which might be nice - small and focused. But maybe it's better to direct people to one of the existing Godot servers? The official one is huge, 30k members or something. I dunno!
Viewing post in Is there an official discord?
This is the official discord server (accept the rules to have full access) https://discord.gg/4JBkykG
More community sites are in https://godotengine.org/community (but may not be suitable for the jam)