Godot_bridge/addon/menus/__init__.py

import bpy

from .panel_main import KH_PT_panel_main

classes = (
	KH_PT_panel_main,
)

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


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