feat: add error details to rest and api exceptions

[ashish-s]

Feature

Add a new property named details to RestException add ApiException. Details is returned by selective apis to populate extra information about errors.
The Studio V2 flow api will be returning extra details with flow validation errors.

Checklist

• I acknowledge that all my contributions will be made under the project's license
• I have made a material change to the repo (functionality, testing, spelling, grammar)
• I have read the Contribution Guidelines and my PR follows them
• I have titled the PR appropriately
• I have updated my branch with the master branch
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation about the functionality in the appropriate .md file
• I have added inline documentation to the code I modified

If you have questions, please file a support ticket, or create a GitHub Issue in this repository.

[thinkingserious]

When I run make java from within yoyodyne, I get many more changes not included in this PR. For example, here, after generation, turns to:

throw new ApiException(
    restException.getMessage(),
    restException.getCode(),
    restException.getMoreInfo(),
    restException.getStatus(),
    restException.getDetails(),
    null
);

---

Could you please update this file also? Thanks!

[ashish-s]

When I run make java from within yoyodyne, I get many more changes not included in this PR. For example, here, after generation, turns to:

throw new ApiException(
    restException.getMessage(),
    restException.getCode(),
    restException.getMoreInfo(),
    restException.getStatus(),
    restException.getDetails(),
    null
);

Could you please update this file also? Thanks!

running master branch of yoyodyne should not change anything. I have added tests for the new constructor in ApiExceptionTest.java

[thinkingserious]

The PR to twilio-java should be based on your yoyodyne branch.

[thinkingserious]

Your handcrafted code LGTM 👍 -- just need to get the generated code included. Thanks!

[ashish-s]

@thinkingserious thanks for the review, i added the generated code from my branch