Cross platform file watcher that will execute the provided command whenever a watched file changes.

This is in no way ready nor intended for any meaningful production usage, it is mainly just a way for me to explore Zig features in a place where I can talk about what I learn.

If you find anything in here useful, please feel free to use it wherever you like, but please consider giving some attribution.

This code is implementation is heavily inspired by when-changed.py.