Add user_id_attribute support to AzureAD connection options

[acwest]

🔧 Changes

Add Support for user_id_attribute to auth0_connection options attribute for AzureAD connections (strategy="waad")

📚 References

Issue: #1006

🔬 Testing

📝 Checklist

• All new/changed/fixed functionality is covered by tests (or N/A)
• I have added documentation for all new/changed functionality (or N/A)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.25%. Comparing base (efdad32) to head (d112601).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1028   +/-   ##
=======================================
  Coverage   90.25%   90.25%           
=======================================
  Files         112      112           
  Lines       16348    16350    +2     
=======================================
+ Hits        14755    14757    +2     
  Misses       1118     1118           
  Partials      475      475           

Files with missing lines	Coverage Δ
internal/auth0/connection/expand.go	93.27% <100.00%> (+<0.01%)	⬆️
internal/auth0/connection/flatten.go	80.56% <100.00%> (+0.02%)	⬆️