Rotunda rc13a

Closing in on the finish line.
-Clipping improvements
-Readability improvements
-Performance improvements
-Slight capture point redesign

-Fixed the minor issue of the missing func_detail visgroup (oops)

-lighting optimization
-performance
-idk some other stuff
-seriously by this point I'm just moving stuff around and doing random fixes and shit
-I just want to get this over with
-help

-Made interior brighter
-Artpass progress
-Fixed broken areaportals

-Fixed various lighting issues
-Added custom steam engine prop by FGD (textures for it will follow soon!!!)
-Added soundscapes

-Continued artpass
-Fixed some lighting
-Changed some materials around
-Melted snow

-idk, tons of things
This will be the last version before we fully commit to the (already mostly done) artpass and go through beta. Mid balance is still not entirely sure, but we've identified three options and will likely pick whichever will play best out of those.

-Artpassed BLU spawn
-Artpassed BLU spytech
-Continued artpass on mid
-Added path around mid, let's see how that plays out
-New skybox and env_light

-Plenty of minor fixes
-Lighting adjustment
-Made access to the point broader, WIP

-Finalized new point design
-Better lighting
-Optimization