This addon includes 3rd person perspective locomotion and blockout materials, sky.
https://www.youtube.com/watch?v=_nEolccutWw
3D Model is provided by GDQuest: https://github.com/GDQuest/godot-3d-mannequin
This project also uses a character controller and camera script from this repository: https://github.com/pemguin005/Third-Person-Controller--SoulsLIke-Godot4