Feat: make model.id required

[mikbry]

For top-level models use HF id like:
https://huggingface.co/api/models/TinyLlama/TinyLlama-1.1B-Chat-v0.6
id="TinyLlama/TinyLlama-1.1B-Chat-v0.6"
For include's model without HF id generate uuid in build.py