Document Space URL, upstream duplicate, link notmax123/blue

README title tweak; update male1 voice style

Use two voices only (Female/Male); drop female2 and male2

fix(build): drop lightblue-onnx git dep; add onnxruntime (Space uses app.py only)

docs/deps: point upstream to github.com/maxmelichov/BlueTTS

docs: refresh Space README for multilingual BlueTTS and four voices

Clean release: multi-language BlueTTS with improved UI