ISOLATION RC2/RC3 CHANGES

* Added mine alcove beneath bot spawn building
* Added spectator cameras
* Clipped fences near deathpits
* Fixed some issues with lightbulb props
* Added bot engineer locations (engy_nest01, engy_nest02, engy_nest03)
* Fixed an issue with the bomb landing on a rock in the valley
* Fixed some clipping issues at bot spawn
* Fixed nav mesh around boulder in valley
* Fixed nav mesh issue on wooden walkway at entrance to valley
* Fixed nav mesh issue on stairs of red wood flank from valley

ISOLATION RC1 CHANGES

* Added raised snowbank to the valley
* Adjusted walkway on ledge at entrance to valley
* Increased size of boulder + cover at entrance to valley
* Adjusted fence at stairs to bomb hatch
* Added one large ammopack at bomb hatch
* Changed position of large health and ammopack combo at bomb hatch
* Reduced size of redwood side room slightly
* Added various out-of-bounds detailing