Devlog 53: Solar power and cable management

Added a functional electrical system with freely connectable cables. Power will still work in whatever topology, you can daisy chain, create loops or even create a big spaghetti mess.

Solar panels generate power depending on the sun angle and also shadowing. At higher latitudes you need to angle them for best performance. Also ensure they are not obstructed by any objects or vegetation. Batteries will be implemented next so that you can store all that free solar energy for night use.

Cables are physically simulated to a certain extent, with custom gravity and tension forces. They do not have physics collisions otherwise they will be very unstable especially when entangled. This allows for beautiful buttery smooth cables that are stable and do not jitter or kink up.