add: VoiceOS offline models by chipset (9 model files + MATRIX selection guide)

cleanup: remove leaky qnn-whisper/ paths (will re-publish under VoiceOS/Offline Models by Chipset/)

Upload folder using huggingface_hub

docs: expand README with TaliOS context, model purpose, and pipeline role

docs: rebrand model identifiers to Tali- prefix

docs: brand-neutral README — strip upstream lineage references

Initial model card — Whisper QNN family

initial commit