List helpdesk forms through GLPI's API

[AdrienClairembault]

Checklist before requesting a review

• I have performed a self-review of my code.
• I have added tests that prove my fix is effective or that my feature works.

Description

Add a getHelpdeskFormsDetails endpoint.

Usages:

• GET http://localhost:80/api.php/v1/getHelpdeskFormsDetails // First page, will only load 12 items
• GET http://localhost:80/api.php/v1/getHelpdeskFormsDetails?page=2&page_size=10 // Custom page and size

[AdrienClairembault]

Waiting for a first validation by @stonebuzz, who will be needing it for GLPI's mobile app.

[AdrienClairembault]

Note: this will only get forms from the root category, do you need this endpoint to return forms from all categories or will you get the categories using the API and then request forms from a specific category like GET http://localhost:80/api.php/v1/getHelpdeskFormsDetails?category=1 ?