Add support for show_as_button and is_signup_enabled

[acwest]

🔧 Changes

• Add support for is_signup_enabled and show_as_button flags with Organization Connection resources

📚 References

• https://auth0.com/docs/api/management/v2/organizations/post-enabled-connections

🔬 Testing

There should be more test cases for failure cases:

• setting is_signup_enabled when assign_membership_on_login is false or on a non-db connection should fail
• setting show_as_button to false on a non-enterprise connection should fail

📝 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 90.28%. Comparing base (5b2e3ed) to head (e57b4a8).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #974      +/-   ##
==========================================
+ Coverage   90.24%   90.28%   +0.03%     
==========================================
  Files         103      103              
  Lines       13866    13910      +44     
==========================================
+ Hits        12514    12558      +44     
  Misses        961      961              
  Partials      391      391              

Files	Coverage Δ
internal/auth0/organization/data_source.go	89.76% <100.00%> (+1.16%)	⬆️
internal/auth0/organization/expand.go	100.00% <100.00%> (ø)
internal/auth0/organization/flatten.go	100.00% <100.00%> (ø)
internal/auth0/organization/resource_connection.go	88.23% <100.00%> (+0.60%)	⬆️
...nternal/auth0/organization/resource_connections.go	88.14% <100.00%> (+1.21%)	⬆️

[sergiught]

We're almost there! This was a big one 💪🏻 good job so far!