Auto install is buggy and broken

[HippoProgrammer]

There is no clear way to install for Windows. The lack of git on Windows means that the current README is wrong, and installation instructions for Python are lacking for both OSes.

In addition, the binaries for stockfish must be installed via a .zip file with a POPCNT precompiled binary instead of a source install. Using a self-compiled binary would allow supported computers to use the faster AVX2 binaries if compatible. If no self-compilation is possible due to the requirements for MSYS32 on Windows, then a check to determine AVX2 compatibility would be helpful, or even a selector with a reference list for manual installation would be helpful.

Also, the .whl files are broken on all OSes, as they do not come with packaged stockfish or a setup.pyfile: attempt to fix this.