* Moved all util libs like `channel` into a `lib/` directory within
`.lune`. Also includes a builder-pattern exec lib.
* Added dev scripts for fmt (stylua) and typecheck (luau-lsp).
Restructures the project to be a library with generator exports, and
includes lune scripts as examples on how to use exported generators by
the library.
Also specifies `includes` and pins a pesde version in the package
manifest.