Fixed #14935 - improvements and more tests around user deletion

[snipe]

This adds a bunch more tests around user deletion, and back ports a fix that I had to hotfix as well regarding a typo on user deletion and a bad path to the error message if you're trying to delete a user that is already deleted. While I was in there, I also updated some of the docbloc return signatures.

[what-the-diff]

PR Summary

• New Models Added in User API Controller
  Two new models, Accessory and Consumable, are now imported in the UsersController.php file for the app's API. This will provide more comprehensive user-related information within the app.

• Return Types Updated in User API Controller
  The return types of multiple methods in the UsersController.php file have been changed to either arrays or JsonResponse. This makes the API more flexible and enables our servers to reply using structured JSON data, improving the clarity and usability of the responses.

• Changes in the Main User Controller
  Extra libraries for logging and storage are added to UsersController.php. Also, similar to the API counterpart, the destroy method's return type is updated. This can provide additional useful insights while debugging issues, and facilitate file-related operations.

• Enhancements in Delete User Request
  The DeleteUserRequest.php file experienced several changes, notably transitioning the authorize method to utilize the Gate class, which adds an extra layer of authorization. Validation for whether a user has already been deleted has also been added alongside custom error messages to promote clarity for users.

• User Factory Update
  A new 'deleted user' state has been crafted in UserFactory.php, allowing tests to simulate this scenario in a simplified way.

• Expansion of API-based User Deletion Tests
  New tests to validate error handling for non-existent or previously deleted users are added in DeleteUserTest.php. In addition, more precise tests are established for permission validation during user deletion.

• UI-based User Deletion Tests Expansion
  New tests have been added to DeleteUserTest.php, including scenarios for users deleting other users, as well as handling non-existent or already-deleted users. Modifications have also been done to test the permissions to delete a user interface.

[uberbrady]

This is a bunch of test additions, and I'm definitely glad to have them. I'd like to dig around the one 'skipped' test a little, but this feels like we're on the right track. Thank you!