Spacepod construction OVERHAUL

- Pod frames are now built out of frame parts, not machine frames
- Added a Spacepod fabricator, capable of making frame parts, cells, pod cores, and pod armor ( to be added in greater variety )
- Pod frames are now completed with fabricated plates ( to allow for multiple types ) made in the fabricator
- Added Spacepod Hangar R&D console
- Improved options for R&D server
*Minor map changes (listed here so someone else can add them, because they're not big enough for a commit): Added cable coil and glass to spacepod hangar. Replaced plasteel with just plasma. Added in fabricator and R&D console.
*Future plans: Make the spacepod construction properly reversible, add in more plating and core types from research, make emagging the fabricator create syndicate armor
*Other notes: changed mech and pod fabricators to dispense materials to their output, since it wasn't spawning them otherwise. Made fabricators only list >0 amounts of materials, to avoid clog of 20+ new ores