Procedural generation of the universe

- [ ] Manually create a list of suitable maps
- [x] Create a name generator for solar system names
- [x] Create a name generator for planet names
- [x] Create a random list of solar systems
- [x] Connect the solar systems using a nearest-neighbour logic
- [x] Create a random list of planets and distribute them equally among the solar systems
- [ ] Randomly assign maps to the planets (take orbit level into account)
- [x] Equally divide the solar systems between the factions