API changes to allow for public user.

[nsafwan]

Description

Allows users without an authentication token to access the raw data API. Migrating the dw_descripter to the Rest stack through the route /rest/v1/warehouse/search/dw_descripter. Added new test cases for the new dw_descripter endpoint and modifying the test for the raw data endpoint to now pass for requests with empty token in accordance to the modifications.

Two new exception classes were added for token authentication:

• classes/Rest/Exceptions/BadTokenException.php
• classes/Rest/Exceptions/EmptyTokenException.php

Motivation and Context

Since the raw data endpoint is used for the data catalog, this would allow for public/non logged in users to view the entries available to them without a token. Migrating the dw_descripter endpoint allows for this same behavior and places it in the same place as the rest of the API functionality. Adding the new exception classes separates UnauthorizedHttpException for more nuanced behavior depending on empty or invalid token.

Tests performed

Automated tests. Modified tests to test for the changed functionality and added new test for the migrated endpoint.

Checklist:

• The pull request description is suitable for a Changelog entry
• The milestone is set correctly on the pull request
• The appropriate labels have been added to the pull request

[ryanrath]

Just a few

[nsafwan]

Missing 'r' and snake_case for want_public_user have been fixed. And yes, that check is failing because of pulled code from get_dw_descripter.php.