Project Housekeeping

[3Shain]

This is a long-term agenda.

A consistent code style guide should be figured out. At present our code is influenced by many style guides including Microsoft style (after all we are trying to implement DirectX), LLVM style, STL style, and even DXVK style... maybe we don't have to use the same code styles for all subcomponents, but at least we should clearly state a consistent code style at subcomponent level, and let them be enforced by lint checker and formatter (e.g. clang-format).

Also we are unintentionally use code width of 80 characters and it often creates unbalanced line breaks. We probably should shift towards 120 characters from now on.