* [Zone] Zone State Automated Testing and Improvements
* Spawn condition
* Update zone.cpp
* Remove redundant logic
* Update zone_state.cpp
* TestZLocationDrift
* Protect NPC resumed NPC's from being able to die
* Zone optimizations
* More changes
* More
* Update entity.cpp
* Beautiful
* Amazing
* Feature flag all logic
* Broadcast to group
* Update mob.cpp
* Updates
* Update client.cpp
* Update client.cpp
* Add rule Zone:EnableEntityClipping
* Little bit of cleanup
* Don't send update to self while in group
* Remove visibility work and feature flags
* Cleanup
* Logging
* Improve CheckSendBulkNpcPositions
* No need to cast
* Field cleanup
* Build initial list on zone-in
This is just so if someone wants a quick way to measure how long
something takes for benchmarking purposes they don't have to
reinvent anything. See examples in comments
