Refactors the Memecrypto API to improve generalized usage.
Adds unit tests that verify memecrypto works, so that future changes
don't potentially break the code.
add docs, move some data fetching to more appropriate class
remove old XP memecrypto support handling, was previously removed due to
net standard/core split
refactor memecrypto to handle multiple save sizes (USUM won't be the
same size save file); placeholder -1 for USUM size
