[prototype] a number checker

This is just a small prototype. I used it to learn Godot. Maybe it will be extended.

Just type in something and the tool will check if its a number.

External Resources:

https://opengameart.org/content/2-high-quality-explosions

https://opengameart.org/content/keyboard-soundpack-1-typing-and-single-keystroke...

https://style64.org/c64-truetype