Complete application API

[devnote-dev]

Most of the endpoints for the application API has been covered with a few notable ones missing, like servers (for example). Ideally this should be covered entirely.

[real2two]

For reference: https://github.com/pterodactyl/panel/blob/develop/routes/api-application.php (for anyone who's willing to contribute to this.)

[zvikasdongre]

I will be trying to document the servers endpoints of the application API, but from the release tag v1.11.3, because there are some differences between release and development codebase.