Add Scorecard action

[mlxd]

Before submitting

Please complete the following checklist when submitting a PR:

• [ ] All new functions and code must be clearly commented and documented.

• [ ] Ensure that code is properly formatted by running make format. The latest version of black and clang-format-14 are used in CI/CD to check formatting.

• [ ] All new features must include a unit test. Integration and frontend tests should be added to frontend/test, Quantum dialect and MLIR tests should be added to mlir/test, and Runtime tests should be added to runtime/tests.

When all the above are checked, delete everything above the dashed line and fill in the pull request template.

---

Context:

Description of the Change:

Benefits:

Possible Drawbacks:

Related GitHub Issues:

[github-advanced-security[bot]]

This pull request sets up GitHub code scanning for this repository. Once the scans have completed and the checks have passed, the analysis results for this pull request branch will appear on this overview. Once you merge this pull request, the 'Security' tab will show more code scanning analysis results (for example, for the default branch). Depending on your configuration and choice of analysis tool, future pull requests will be annotated with code scanning analysis results. For more information about GitHub code scanning, check out the documentation.

[dime10]

@mlxd Is this something we still want in the repo?