Add c bindings + Updated camke builds

[cmmarslender]

The initial goal here was to make c wrappers for create_discriminant, prove and verify_n_wesolowski that mirrors the python bindings, but returns c types. This then enables me to call these from go bindings (which don't support c++ types, only c). I created those wrappers, then needed to (optionally) build the shared and static libraries for all our supported platforms, via cmake.

Well, this then required the cmake file to support windows. Once we had the windows support in cmake, it made sense to apply the same patterns from other repos (such as chiapos) to simplify the setup.py to use cmake for windows as well, instead of the split logic for windows/not-windows that previously existed.

So this PR does two things:

1. Adds the c wrappers for the 3 functions I need to bind to go
2. Changes the wheel process to also build wheels via cmake

Testing

1. The wheels build and the CI tests pass
2. Downloaded the windows wheels from the new builds and before, and the contents are the same. Expected .dlls are in both versions
3. Installed latest chia from source on windows, pip uninstall chiavdf, and installed the version from this branch. Node was able to sync new blocks.

For now, the c libraries just exist as artifacts on the new workflow. May update this later to package into something a bit easier to consume downstream, but that can be in a follow on PR

[hoffmang9]

lgtm