deflate implementation in standard library

[andrewrk]

These compression and decompression functions are so common that we should have them ship with the compiler. We'll probably need to depend on them for the package manager.

[itsmontoya]

Commenting here since Github won't let me be assigned.

I'll try to look into this asap

[daurnimator]

@itsmontoya @schmee did either of you get anywhere on this issue?

[devzero]

I didn't write it, but I found this: https://github.com/tiehuis/zig-deflate that looks pretty far along

[emekoi]

the implementation that is based on isn't designed for speed.