whisper : make large version explicit + fix data size units (#1493)

whisper : add support for large v3 (#1444)

models : Faster download for models on windows using BitTransfer (#1404)

models : cd statements are quoted to allow spaces in path (#1041)

models : change HF hosting from dataset to model

models : fix HF model URL (close #356)

talk : improve prompting

Fix paths echoed after the download

models : add the new "large" model release by OpenAI

models : change default hosting to Hugging Face

Added for Windows implemenated script download-ggml-model.cmd