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/SerializeXMLWriter.cpp

@@ -10,6 +10,8 @@
 #include "CrySystem_precompiled.h"
 #include "SerializeXMLWriter.h"
 
+#include <AzCore/Time/ITime.h>
+
 static const size_t MAX_NODE_STACK_DEPTH = 40;
 
 #define TAG_SCRIPT_VALUE "v"
@@ -18,7 +20,9 @@ static const size_t MAX_NODE_STACK_DEPTH = 40;
 
 CSerializeXMLWriterImpl::CSerializeXMLWriterImpl(const XmlNodeRef& nodeRef)
 {
-    m_curTime = gEnv->pTimer->GetFrameStartTime();
+    const AZ::TimeMs elaspsedTimeMs = AZ::GetRealElapsedTimeMs();
+    const double elaspedTimeSec = AZ::TimeMsToSecondsDouble(elaspsedTimeMs);
+    m_curTime = CTimeValue(elaspedTimeSec);
     assert(!!nodeRef);
     m_nodeStack.push_back(nodeRef);