Platformer imopssible (by Easton Zou)

This game was created by Easton Zou while he was doing a Godot game development camp at Code Wiz. We're required to include the following legal notices: Godot's notice: Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated…