Removal and Replacement of the CryTimer (gEnv->pTimer) (#5409)

Replaced and removed the CryTimer (gEnv->pTimer). The new TimeSystem is a merger of the current time functionality found in the engine.

* Rename TimeSystemComponent.h/.cpp to TimeSystem.h/.cpp
* Adding New TimeSystem
* remove old timer cvars
* small improvements to the time system.
 - updated parts to use the time conversion functions.
 - in AdvanceTickDeltaTimes applying t_simulationTickScale is now uses doubles instead of floats.
* Replace gEnv->pTimer / ITimer usages with TimeSystem
* Updating usages of AZ::TimeMs{ 0 } and AZ::TimeUs{ 0 } to AZ::Time::ZeroTimeMs and AZ::Time::ZeroTimeUs
* red code the CryTimer
* using TimeUs instead of TimeMs is some cases + updating usages of old cvars to new

Signed-off-by: amzn-sean <75276488+amzn-sean@users.noreply.github.com>

Code/Legacy/CrySystem/XML/SerializeXMLReader.cpp

@@ -10,6 +10,7 @@
 #include "CrySystem_precompiled.h"
 #include "SerializeXMLReader.h"
 #include <ISystem.h>
+#include <AzCore/Time/ITime.h>
 
 #define TAG_SCRIPT_VALUE "v"
 #define TAG_SCRIPT_TYPE "t"
@@ -21,7 +22,6 @@
 CSerializeXMLReaderImpl::CSerializeXMLReaderImpl(const XmlNodeRef& nodeRef)
     : m_nErrors(0)
 {
-    //m_curTime = gEnv->pTimer->GetFrameStartTime();
     assert(!!nodeRef);
     m_nodeStack.push_back(CParseState());
     m_nodeStack.back().Init(nodeRef);
@@ -87,18 +87,21 @@ bool CSerializeXMLReaderImpl::Value(const char* name, CTimeValue& value)
     }
     else
     {
+        const AZ::TimeMs elaspsedTimeMs = AZ::GetRealElapsedTimeMs();
+        const double elaspedTimeSec = AZ::TimeMsToSecondsDouble(elaspsedTimeMs);
+        const CTimeValue elaspedTime(elaspedTimeSec);
         float delta;
         if (!GetAttr(nodeRef, name, delta))
         {
             //CryWarning( VALIDATOR_MODULE_SYSTEM,VALIDATOR_WARNING,"Failed to read time value %s", name);
             //Failed();
-            value = gEnv->pTimer->GetFrameStartTime(); // in case we don't find the node, it was assumed to be the default value (0.0)
+            value = elaspedTime; // in case we don't find the node, it was assumed to be the default value (0.0)
             // 0.0 means current time, whereas "zero" really means CTimeValue(0.0), see above
             return false;
         }
         else
         {
-            value = CTimeValue(gEnv->pTimer->GetFrameStartTime() + delta);
+            value = CTimeValue(elaspedTime + delta);
         }
     }
     return true;