James Peters

Add method to Signal's to expose subsciber counts

1

### Describe your motivation I would like to be able to run a scheduled routine to update a Signals value periodically but only when a client is actually subscribed to...

Looks like the 1.21.5 images are failing to run with "exec /opt/minecraft/docker-entrypoint.sh: exec format error" I'm running on AMD64, running with latest/1.21.4 works fine though