Class is_admin

Finds out if PHP-CLI was started with adminstrative privileges. (Ubuntu + Windows)

Located at resource1.php

Methods
`public static`	`check(): boolean` Checks weather the PHP-CLI process is running as an admin. Only checks on the first call, further calls get a cached… Checks weather the PHP-CLI process is running as an admin. Only checks on the first call, further calls get a cached result. Returns Weather the process was run as admin or not.	#
`public static`	`refresh(): boolean` Cleares the check() cache and calls check again then returns its new value. Cleares the check() cache and calls check again then returns its new value. Returns Weather the process was run as admin or not.	#