Thoughts
Take two: steps for running blink with microzig:
1. Install zig 0.12 (`zig version`)
2. Go to https://downloads.microzig.tech/
3. Click microzig-0.12.0/
4. Click examples/
5. Click raspberrypi/
6. Download the tar.gz
7. Unzip it
8. In that directory, run `zig build` (takes a couple minutes with no cache)
I'm borderline angry because the README says "head over to downloads.microzig.tech and download an example" and if you go to that link you get a directory listing, and one of the directories is "examples/" And if you download an example from that directory, you get a cryptic "missing top-level 'paths' field" error.