Generate self-contained packages to download

[vitreo12]

These packages should be for each language (SC, max, pd), and they should contain:

1. The nim compiler
2. The omni package
3. The binary for the specific language

The compiler pipeline, then, should call to the said nim compiler, and not the global one. This also should require the user to have a C compiler already installed (both Linux and MacOS come pre-bundled with it, so no worries). Then, by simply putting the folder in like the SC's Extensions folder, the JIT compiler should work on next SC boot.

[vitreo12]

zig cc can be used as the standard C compiler, so it can be embedded in: https://andrewkelley.me/post/zig-cc-powerful-drop-in-replacement-gcc-clang.html

This could also allow for cross-compiling omni code between Windows/MacOS/Linux!