This PR adds a workflow to automatically publish the package (including
attestations) to Python upon tag/release creation.
Note that this relies on trusted publishing:
https://docs.pypi.org/trusted-publishers/
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Signed-off-by: Yuan Tang <terrytangyuan@gmail.com>
# What does this PR do?
Initial implementation of GitHub Actions workflow for automated testing
of Llama Stack.
## Key Features
- Automatically runs tests on pull requests and manual dispatch
- Provides support for GPU required model tests
- Reports test results and uploads summaries