Create a better firmware

This firmware was very poorly written, maybe even some years old now. We should rewrite it. Feature Requests:

• Startup Animation (blue if starting, red if failed and green if done)
• Check message for errors
• Create a get colors function
• Effect: Make the cheese party (Käseparty) not random, instead use 25+ colors and randomly choose them
• Move from JSON to bytes (variant 3)