feat: Add Custom Prompt Support

[m3talsmith]

🔧 Changes

• Adds support for Custom Prompts to Management

📚 References

• API this is fulfilling: https://auth0.com/docs/sign-up-prompt-customizations#-signup-prompt-entry-points

🔬 Testing

Unit tests added into the normal flow. Make test should cover it.

📝 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)

[sergiught]

It would also be great to start draft PRs within the auth0-cli and terraform provider as well with this functionality, before we merge this PR. To validate that we're indeed building the best API possible.

[codecov-commenter]

Codecov Report

Attention: 16 lines in your changes are missing coverage. Please review.

Comparison is base (4173045) 94.93% compared to head (3683da4) 94.78%.

Files	Patch %	Lines
management/prompt.go	60.97%	11 Missing and 5 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #341      +/-   ##
==========================================
- Coverage   94.93%   94.78%   -0.16%     
==========================================
  Files          47       47              
  Lines        9081     9124      +43     
==========================================
+ Hits         8621     8648      +27     
- Misses        348      359      +11     
- Partials      112      117       +5     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[ewanharris]

Just a comment around the naming to ensure we're consistent with documentation/naming of the feature

[ewanharris]

Looks good! Thanks @m3talsmith!

We can merge but hold on releasing to ensure we need no API changes

[Arturs1123]

Wow, Great!!!!