Add 3d game supporting system(like game from Godot) and GodotOS updating

[the-az-dev]

This project needs this issue for the reason of good oportunities of Indie Godot Game developers! Everyone can add own game to your Godot OS on the free or maybe not free licunse(on your choise) and after that others visitors will play that game and testing it!)

About Updates
For new changes and best perfomance fro users you can create updating system for updating GodotOS app like on windows or linux operating systems. It will be much comfortable for non-programmer users!)

[popcar2]

GodotOS does support 3D games, check out the cube scene.

As for auto-updating, I don't think Godot has an easy way to patch games yet. Might look into it in the future.