V2 - The Medical Outpost, and fleshing out the asteroids

- Added a Medical Outpost in the sourth-western part of the map with
functional atmos and power. In-lore, it's some outpost that is linked
with a shuttle. There's a fair amount of basic medical supplies in here
- Changed Syndie Outpost access requirements to Centcomm-level (forcing
players to get inventive or git gud)
- Adding pre-spawned galleries and tunnels to some asteroids