File system watcher GenServer.
This is a pure OTP GenServer that wraps file_system for watching
file changes. The watch/3 convenience function moved to Trebejo.File
in v3.0.0 because it depends on Arrea.WorkerSupervisor, but this
GenServer remains in Apero.
You normally use Trebejo.File.watch/3 rather than instantiating this
directly.
Summary
Types
Functions
@spec start_link(keyword() | map()) :: GenServer.on_start()