ci(gh-action): add Apache RAT & package license checker workflow

[erisu]

Platforms affected

n/a

Motivation and Context

Audit license headers on pull requests and commit pushes.

Description

Created new workflow that runs Apache RAT.

Testing

• n/a

Checklist

• I've run the tests to see all new and existing tests pass
• I added automated test coverage as appropriate for this change
• Commit is prefixed with (platform) if this change only applies to one platform (e.g. (android))
• If this Pull Request resolves an issue, I linked to the issue in the text above (and used the correct keyword to close issues using keywords)
• I've updated the documentation if necessary

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (bff99d3) 70.68% compared to head (2562a34) 70.68%.
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #630   +/-   ##
=======================================
  Coverage   70.68%   70.68%           
=======================================
  Files           4        4           
  Lines         307      307           
=======================================
  Hits          217      217           
  Misses         90       90           

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