Godot_bridge/addon/preferences/__init__.py

import bpy

from .preferences import GB_Prefs

classes = (
    GB_Prefs,
)

def register_preferences():
    from bpy.utils import register_class
    for cls in classes:
        register_class(cls)
    

def unregister_preferences():
    from bpy.utils import unregister_class
    for cls in classes:
        unregister_class(cls)