Bots idea

[Gleek117]

I think the issue is bots can solve everything bu building more bots, ports and solar panels.
So I suggest improve the complexity to expand bot use.
My current idea is to let bot be belonging to specific roboport and item needs to be passed around between robots.
Meanwhile add circuit control to set the number of bots belong to each roboport.
This way:
1. Bots are still easy to set up in small through put case by overlaping robonetwork coverage with roboports each containing at least one bot.
2. Add some complexity and versatility to robonetwork so there is more fun and challenge to the bots.
3. Can still achieve high throughput but need nice circuit and roboport placement settings.