Refactor chess specific code to new library

[nicosrm]

New structure should look like this:

├── LICENSE
├── libraries
│   ├── Dezibot
│   ├── EmbeddedChessPieces      <---
│   └── VEML6040
└── src
    ├── colour_detection
    └── embedded_chess_pieces

• EmbeddedChessFigures includes all chess specific code
• Dezibot can be extended if general enough but should not include purely chess related code