Upload test run results to codecov

[HarelM]

Launch Checklist

This is an attempt to upload test data to codecov so that it will report of flickering tests.
It uploads jest unit tests results using junit format and adds a junit format to render tests.
This feature is still in beta and they have asked me to try it out and report feedback.
Would be interesting to see how this works.

• Confirm your changes do not include backports from Mapbox projects (unless with compliant license) - if you are not sure about this, please ask!
• Briefly describe the changes in this PR.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.29%. Comparing base (193743a) to head (7d76a74).

✅ All tests successful. No failed tests found ☺️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #4014       +/-   ##
===========================================
- Coverage   86.32%   70.29%   -16.04%     
===========================================
  Files         242      241        -1     
  Lines       32515    32511        -4     
  Branches     2141     1243      -898     
===========================================
- Hits        28070    22854     -5216     
- Misses       3490     8414     +4924     
- Partials      955     1243      +288     

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