Add error extensions to AuthError

[shree-iyengar-dls]

Improving numtracker auth error messages

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.44%. Comparing base (a25367f) to head (2359409).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #275      +/-   ##
==========================================
+ Coverage   76.35%   76.44%   +0.08%     
==========================================
  Files          13       13              
  Lines        1937     1944       +7     
==========================================
+ Hits         1479     1486       +7     
  Misses        458      458              

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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

[tpoliaw]

Could we have a test (probably in graphql/mod.rs?) to check that the code is added to the extensions when the auth check is called via a graphql query? I think we need to be calling extend() somewhere so I'm not sure the extensions are doing anything yet.

Most of the other comments are code-style things - the change itself looks ok.

[tpoliaw]

Up to you if you want to change the tests

duplicate tests in auth.rs not needed