Merge: from baseplayer_serverupdateparallel
- Optimizes ServerOcclusion by reordering work and reducing number of pairs considered
- Optimizes parallel snapshot send out by reducing Pool contention
- General optims via reduced profiler instrumentation (new ServerProfiler.Core binaries)
Tests: 2p session on craggy with teleporting around and various occlusion scenarios (invis, dead, normal occluded, in view)