support emacs-like shortcuts
Created by: Howardw3
For non-MacOS, the default shortcuts is empty. For MacOS user, it will re-enable the system cursor shortcuts in Godot Editor.
- Move cursor forward:
Ctrl + F
- Move cursor backward:
Ctrl + B
- Move cursor up:
Ctrl + P
- Move cursor down:
Ctrl + N
- Delete char:
Ctrl + D
Thanks DrMoriarty