0.1.3/Ability to spawn small notification message

[misoe92]

Description
A centralized and easy way to spawn an auto removed notification that are shown for x seconds and then automaticly faded out of view and removed.

This will enhance user friendliness.

Describe the solution you'd like
First find out whether or not it can be done in a good way through some sort of Godot functionality. If not build a class that uses a pre build scene that it duplicates and updates before rendering it.

A class that holds the functionality it needs to spawn a single notification and a static class for the notification handler, which basicly just spawns out the notifications and initiates removal of said notification after x time.