Add benchmarks

[reyhankoyun]

Issue #, if available:

Description of changes:
Converting to draft to test the benchmarks workflow before final review.

Note: The CodeQL warning on the checkout step is expected and matches the existing pattern in integration-tests.yml (which uses the same pull_request_target + safe-to-test label security model).

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.88%. Comparing base (8554c56) to head (7c158d1).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #152   +/-   ##
=======================================
  Coverage   91.88%   91.88%           
=======================================
  Files          14       14           
  Lines        2404     2404           
  Branches     2404     2404           
=======================================
  Hits         2209     2209           
  Misses        147      147           
  Partials       48       48           

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