Revenant's Retreat [WIP] 0.6.5

Changes:

Hospital given a basic sign.
Mini-pagoda tower added.
Small comms building added.
Tweaked a dull rooftop to include a "picnic setup"
Test for lower outer hull glass added.
Hoverbike tests added to patrol. Ignore the stray block.
Megaserver Tower added. No door to be added, it's a "machine".
Ornate building added.

Defense systems and Queen statue still left incomplete.

Added new buildings, including decorative towers, a "Police station", a restaurant, an underground bunker, and some work on the turret pylons.

Slightly cleaned up some previously existing structures.