Add inference mode selector: Full / MDX Only / RVC Only

Fix runtime errors: FAISS index validation, FP16 dtype mismatch, soundfile error

Fix FAISS index error and FP16/FP32 dtype mismatch

Remove rmvpe+, add all SawitProject/rvc supported f0 methods

Rename params to match SawitProject/rvc API naming

Replace rvc-python with SawitProject/rvc for modern Python compatibility

refactor: replace rvc-python with SawitProject/rvc

fix: resolve all app errors and bugs

Update src/webui.py

Update src/webui.py

Update src/main.py

Update src/main.py

Update src/main.py

Update src/main.py

yuh

Update src/webui.py

Update src/webui.py

Update src/webui.py

Update src/webui.py

Update src/webui.py

Update src/webui.py

Update src/webui.py

Update src/webui.py

Update src/webui.py

Update src/webui.py

Update src/webui.py

Update src/webui.py

Update src/webui.py

Update src/webui.py

Update src/webui.py

Update src/main.py

Update src/main.py

Update src/main.py

Update src/main.py

Update src/main.py

Update src/main.py

Update src/main.py

Update src/rvc.py

Update src/rvc.py

Delete src/pipeline.py

Delete src/predictor

Delete src/infer_pack

Delete src/embedder

Update src/pipeline.py

Update src/embedder/fairseq.py

Update src/webui.py

Update src/main.py

Update src/main.py

Update src/main.py

Update src/main.py