dGame Precompiled header improvements (#876)

* moving branch

* Add deleteinven slash command

* Change name of BRICKS_IN_BBB

* Use string_view instead of strcmp

* Clean up include tree

* Remove unneeded headers from PCH files

Removes unneeded headers from pre-compiled headers.  This increases compile time, however reduces development time for most files.

* Update Entity.h

* Update EntityManager.h

* Update GameMessages.cpp

* There it compiles now

Co-authored-by: Aaron Kimbrell <aronwk.aaron@gmail.com>

dGame/dBehaviors/SpawnBehavior.cpp

@@ -7,6 +7,8 @@
 #include "dLogger.h"
 #include "DestroyableComponent.h"
 #include "RebuildComponent.h"
+#include "Entity.h"
+#include "EntityInfo.h"
 
 void SpawnBehavior::Handle(BehaviorContext* context, RakNet::BitStream* bitStream, BehaviorBranchContext branch) {
 	auto* origin = EntityManager::Instance()->GetEntity(context->originator);