Updating to RVC2 models

[TheRealShieri]

Update to RVC2 for better voice quality and generation time.

[HRNPH]

sure @TheRealShieri please add referenced or example repo that've done a good implementation I'll be working on it if I'm free, current dying from work

[HRNPH]

Implementation Based on RVC2 would be done on AIVoifu Repo as PyPi libs with main focus combing BARK and RVC2