Space building

When a space station with at least 100 meters in any direction is build, an option will be unlocked to build ships from that station. Resources and fuel will have to be on the ship to fuel it, with parts focused on storing resources being necessary.
Parts built in space will by default have a larger scale than on Droo if the station is really big.
The station will also have to have at least 250 droods to build a ship.
About the resources, implementing a simple mining system would be helpful, but that's for other suggestions.