acul initial implementation with unit tests written in the new format

[tusharpandey13]

Updated PromptsManager with 2 new methods:

Path	HTTP Method	Method Name
/prompts/{prompt}/screen/{screen}/rendering	GET	getRendering
/prompts/{prompt}/screen/{screen}/rendering	PATCH	updateRendering

also added unit tests for the same.

References

Docs are not public yet for this feature. Will update here once they are released in EA/GA.

Testing

We will release guides to use this features separately that can help in manual testing.

Test Suites: 43 passed, 43 total
Tests:       1421 passed, 1421 total
Snapshots:   0 total
Time:        7.338 s, estimated 8 s
Ran all test suites.

• This change adds unit test coverage
• This change adds integration test coverage

Checklist

• I have read the Auth0 general contribution guidelines
• I have read the Auth0 Code of Conduct
• All existing and new tests complete without errors