Add support for attributes and precedence to ConnectionOptions & phone_number to SignupRequest.

[duedares-rvj]

🔧 Changes

1. Added schema updates to ConnectionOptions and included attributes and precedence
2. Added corresponding expand and flatten logic.
3. Added relevant test cases to expand and flatten nested structs.

📚 References

Required changes have been made in line with the documentation here

Create a connection with attributes
Body Params: options-> attributes

🔬 Testing

make test FILTER= TestAccConnectionOptionsAttr

Relevant test cases and their recordings have been added to ensure changes as described above.
All created resources are cleaned up after the assertions are completed.

- Auth0ConnectionTestCase

• Added a set of test cases to test various combinations of ConnectionOptions:
• Auth0 Connection with PhoneNumber as Identifier
• Auth0 Connection with Email as Identifier
• Auth0 Connection with Username as Identifier
• Auth0 Connection Cannot set both requires_username and attributes together
• Auth0 Connection With No attribute is active
• Auth0 Connection Cannot set both validation and attributes together
• Auth0 Connection need PhoneNumber on signup but set to inactive on verification

📝 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

Attention: Patch coverage is 91.66667% with 18 lines in your changes missing coverage. Please review.

Project coverage is 90.38%. Comparing base (3616a04) to head (3d9d2f5).
Report is 10 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/auth0/connection/flatten.go	82.17%	12 Missing and 6 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #991      +/-   ##
==========================================
+ Coverage   90.28%   90.38%   +0.10%     
==========================================
  Files         105      105              
  Lines       14126    14341     +215     
==========================================
+ Hits        12753    12962     +209     
- Misses        975      978       +3     
- Partials      398      401       +3     

Files with missing lines	Coverage Δ
internal/auth0/connection/expand.go	93.22% <100.00%> (+0.92%)	⬆️
internal/auth0/connection/flatten.go	80.39% <82.17%> (+0.22%)	⬆️

... and 3 files with indirect coverage changes