Added dedicated spectator mode button which turns off AI player acknowledgment and increases the spawn rate of rebels, made the map fully nodegraphed, added a light that turns on when vortigaunts are spawned

Removed the damage filter since it made rebels invincible. Don't push updates at 1 AM when you're tired.

Made lighting a tad less jank, made sliding doors not clip upwards through the ship, added damage filter that prevents floor turrets and players from harming rebels, added medic alternatives to rebel teleporter

Added dedicated gunner rebels so that random rebels don't immediately scramble to the turrets, re-worked stair geometry to better facilitate NPC movement, added NPC nodes to the bow of the ship, changed helicopter gun sound to be less annoying, and changed NPC target priorities to result in more engaging battles

Initial addon creation.