Update relating to game engine.

[s1887204]

As you know, Cubed Platformer uses Godot, and Godot is currently in 4.0, while this project is still in 3.0

While developing, I had to use Godot 3 due to 4 not existing, so I am currently migrating the game to 4.0.

Expect this to take some time, I just want the game to be up to date with Godot's Features, meaning it will be migrated to 4.0.

Hopefully the migration works and nothing fails.

• S1887204

[s1887204]

As of now, some features (such as file saving) have been failing.