Gigastructural Supertensile Districts (4.0)

Basic mod to add a megalogistics district specialization. Will now work on any regular planets, ecumenopolis, habitats or ringworlds. And now with machine/hive empires too! Sorry about that. Made for personal use, due to how slow it was to build a few kilo structures (hyper relay in particular) and keep up with ever increasing upkeep of structures. This does mean building mega's and giga's will be much easier as such, if it feels too easy to build lemme know. TTFTCUTS (creator of the giga's mod) hinted at this becoming a vanilla feature sometime. If thats not the case later and the mod breaks, feel free to patch this should I be unavailable to do so myself.