fix: install SadTalker own requirements.txt in _setup()

fix: install SadTalker own requirements.txt in _setup()

fix: add facexlib gfpgan realesrgan av deps

fix: pin numpy<2.0 for SadTalker compat

fix: numpy<2.0 pin + VisibleDeprecationWarning patch

fix: remove GFPGAN download, skip enhancer (not needed)

feat: requirements for SadTalker ZeroGPU

feat: Amanda ditto engine (SadTalker ZeroGPU)

initial commit