Patch: Big file-watch performance improvement

This is a very behind-the-scenes fix!

We have code that keeps an eye out for when local community content is added, edited, or removed. The library we were using for this was doing the job correctly, but in a rather wasteful way. In this release, we have replaced it with our own code, and it's much zippier now.

We are noticing far fewer frame stutters in simple cases and better 1% lows in general.

How noticeable this will be depends on your setup and the makeup of the board you are on.

Even if it's subtle, it's one more very necessary step on the journey to v1. Every bit of performance we can save here is performance we can now spend on chonkier systems like fog-of-war.

Back soon with more!