refactor: Add error extensions to AuthError

[shree-iyengar-dls]

Improving numtracker auth error messages

[codecov]

Codecov Report

❌ Patch coverage is 0% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 76.08%. Comparing base (a25367f) to head (873428b).

Files with missing lines	Patch %	Lines
src/graphql/auth.rs	0.00%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #275      +/-   ##
==========================================
- Coverage   76.35%   76.08%   -0.28%     
==========================================
  Files          13       13              
  Lines        1937     1944       +7     
==========================================
  Hits         1479     1479              
- Misses        458      465       +7     

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[tpoliaw]

Looks good but could do with a couple of tests to make sure the errors look as expected.

And numtracker doesn't use conventional commits

[shree-iyengar-dls]

Yup, just adding some tests now