Redstone power to disable spawners

# Feature Request

## Motivation Behind Feature
It would be nice if we can disable spawners with redstone.
Much like the old Spawner plugin can do: https://dev.bukkit.org/projects/spawner

## /version output?

Paper version git-Paper-131 (MC: 1.16.1) (Implementing API version 1.16.1-R0.1-SNAPSHOT)
