Restructure project into MT-safe library. Added a CMake + Docker build system.

[Kracken256]

• Pack code into cross-platform library
• Optimized-sub-optimal code
• Patched race conditions and overflow bugs
• Added inline documentation for the C API

[trufae]

This looks like a hige overhaul of the original code. Can you separate the changes in different commits?

[trufae]

And ideally keep the same coding style

[Kracken256]

I can fix the coding style. But most of the files were changed/removed. Committing individual changes doesn't make much since, there's only like 2 source files and ~15 functions. The new code is ~200x faster (I enabled optimizations).

[trufae]

Yeah its a little hard and probably not much useful. Fix the code style and ill merge! Thank you!!

[Kracken256]

Sorry, I forget about this one. I reformatted the code using Google Style VSCode.