Godot 3D Progress Bar

We'll create a configurable progress bar that you can put in a 3D environment using a tool script. This will also demonstrate how to create a tool script/custom node in Godot 4 by example.

I've published the script itself on my Github here:
https://github.com/GeneralProtectionFault/Godot4-3D-Progress-Bar

Be aware I changed the name of the script there just to differentiate it from the addon that inspired it. That addon (meant for Godot 3.x) can be found here:
https://godotengine.org/asset-library/asset/1093