[CI] Add triton wheels build workflow (#87234)
Also, add `torchtriton` and `jinja2` as extra `dynamo` dependency to PyTorch wheels,
Version packages as first 10 characters of pinned repo hash and make `torch[dynamo]` wheel depend on the exact version it was build against.
TODO: Automate uploading to nightly wheels storage
Pull Request resolved: https://github.com/pytorch/pytorch/pull/87234
Approved by: https://github.com/msaroufim
