We'll use https://github.com/Hejsil/zig-clap for this, for now. Seems worth
trying out.

We need one of these, too. MIT license works.

We do need one.

Scaffold the basic modules for the program, and clean up unnecessary zig-init
template code. Pretty sketchy, but it's late and I don't have much time tonight
so it will have to do.

This is necessary for embedding it using `@embedFile`.