the simple site to create/edit/delete content for restaurant menu in the firebase database and storage. and use firebase authentication for login.
2. create/edit/delete main and sub category for menu (text and image). eg, breakfast, lunch, etc and starter, dessert, etc.
3. create menu items. eg, coffee, tea, etc. which include name, description, price, image and multiple language for all text.
4. arrange all menu item to main and sub category, eg, coffee can be in both breakfast and lunch.
5. all category and menu should have ability to arrange position.