LightsOut sources: general logic

[atodorov]

Source code + necessary instructions how to configure the development environment, necessary programming tools, libraries, IDEs, etc should be provided in a src/ directory under the box directory.

Initially these could be sample sources that are known to work and demonstrate that the hardware fires up! Same initial source can be used as the basis to develop further logic.

The overall logic consists of:

1. Choose which level you want to play aka menu mode, right after power on
2. Loop the chosen level logic, aka play mode
3. Levels are described in the image below:
   

Related to #1