Sync with 4.4.1-stable

[Staudey]

Sync files with the 4.4.1-stable release

Also remove the gdextension_interface.h file that seems to have been accidentally added to the main folder instead of godot/

[ParadoxV5]

I don’t think they are actually maintaining this repo for Godot 4 anymore (#106).
I have long pushed to my fork only and stopped filing PRs.