Fixes

[SidonieBouthors]

Adds the following fixes and features:

• Update dependencies
• Seperate orders on the register page into two columns: in preparation and ready to be served / already served
• Add toast notifications for various actions and errors for instant feedback
• Prevent empty orders
• Use Subsonic 2025 menu
• Use text based menu with strikethroughs rather than SVG menu
• Add secret to prevent pages from being publicly available (except perhaps "public" but eh)

Missing:

• Add a singular public page on top of per register public pages (in case we want multiple registers, single pick up)
• Add allergens, price and vegan/spicy icons to public menu (see with Comm)

Not planned for now:

• Split preparation page into per register columns (unnecessary for 2025 edition as there is a single pick up point)