RVC model merging and conversion

[bobcate]

I have 3 feature requests:

1. RVC model merging
2. RVC model conversion between all available formats (.pth | .onnx | .safetensors | ...(?))
3. Usage support for all RVC model formats

Relevant:
RVC WebUI and Applio has a model merger(aka fusion/blender).
w-okada has a button to convert .pth to .onnx, and has a model merger.
A w-okada fork automatically converts .pth to .safetensors upon upload, and has a model merger.
These scripts supposedly convert models but I couldn't get them to work.

great work with the V2 btw

[erew123]

@bobcate Taken a while for me to reply I know!! Super busy with life, support requests, pushing to get AllTalk V2 released, then bugs and other stuff. There is work going to happen on RVC, just not sure where that's going yet. Someone else is thinking of possibly doing some work on it, so Ill have a chat with them. Going to leave this ticket open for now and Ill get back to you/it at some point.

Thanks