Frostrock b1a

Reuploaded to fix an issue in the included population files causing tanks to spawn in an incorrect place.

• Fixed Engineer buildings not being destroyed when robots forward spawn is enabled
• Added relays to enable/disable nobuild on the godrock ("relay_godrock_nobuild_enable" and "relay_godrock_nobuild_disable")
• Fixed reflections in cave
• Added proper menu photos

mvm_frostrock_a1a
- Added optional forward spawn for robots in the mouth of the cave: mission makers can force the RED team outside
- Vscript is utilized on my end to move entities around and make this possible

• Added two new spawn points for robots: "flank" (tank spawn point) and "cave_entrance" (mouth of cave, new forward spawn to push red back)
• Fixed an instance where the skybox texture was visible through blue cave fog
• Added nav areas to the "godrock"
• Adjusted lighting in "flank" spawn
• Adjusted clipping
• Added the funny banana from Mannhattan
• Fixed z-fighting near the cave exit
• Removed redundant/unnecessary cubemap entities

Known Issues:

• Reflections on the cave walls are still a bit too intense
• When using the forward spawn, robots will not initially be ubered