Add C#/Mono console support by Pineapple Works

We've recently completed tech which enables us to port Godot Mono games to Nintendo Switch and Xbox family of consoles so we wanted to reflect that in the docs.
Also added GDK next to Xbox consoles to signify that we do native Xbox ports and not just use the deprecated UWP technology.

Tried to make the line as short and concise as possible, but am open to further modifications if deemed more optimal.

tutorials/platform/consoles.rst

@@ -66,7 +66,7 @@ Following is the list of providers:
 - `Lone Wolf Technology <http://www.lonewolftechnology.com/>`_ offers
   Switch and PS4 porting and publishing of Godot games.
 - `Pineapple Works <https://pineapple.works/>`_ offers
-  Switch, Xbox One and Xbox Series X/S porting and publishing of Godot games.
+  Switch, Xbox One & Xbox Series X/S (GDK) porting and publishing of Godot games (GDScript/C#).
 - `Flynn's Arcade <https://www.flynnsarcades.com/>`_ offers
   Switch porting and publishing of Godot games.
 - `RAWRLAB games <https://www.rawrlab.com/>`_ offers