code cleanup / better naming

[YellowOnion]

Honestly some of the tests here are useless simply because there's name ambiguity.

There's comments in the code base about crc32c, but no tests are named crc32c, all are named crc32, there's are two different algorithms, they should not be using the same name.

There's about two tests, "aesnihash" and "aesni" very similar names, and because everything is just dumped in the main directory it's really hard to find the specific code for the specific implementation. just finding main.cpp is a mission.