Build time reduction: AzStdOnDemandReflection (#3111)

* Move a few specializations from AzStdOnDemandReflection.inl to cpp file

This reduces compilation time and produced profile/debug file sizes.

The specializations for string and string_view are only implemented for 'char' type, since
others are not used anywhere.

Extracted `Reflect` method from `ClientAuthAWSCredentials` to a cpp file.

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* Windows build fixes.

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* Added missing license.

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* Fix missing spaces in template argument lists

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* Clang format on ClientAuthAWSCredentials.cpp

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* Merge upstream development and fix linux build.

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

Gems/EditorPythonBindings/Code/Source/PythonUtility.cpp

@@ -13,6 +13,7 @@
 
 #include <AzCore/RTTI/BehaviorContext.h>
 #include <AzCore/RTTI/TypeInfo.h>
+#include <AzCore/Serialization/SerializeContext.h>
 #include <AzFramework/StringFunc/StringFunc.h>
 #include <EditorPythonBindings/CustomTypeBindingBus.h>
 #include <pybind11/embed.h>
@@ -276,7 +277,7 @@ namespace EditorPythonBindings
             }
             return false;
         }
-    
+
         bool AllocateBehaviorValueParameter(const AZ::BehaviorMethod* behaviorMethod, AZ::BehaviorValueParameter& result, Convert::StackVariableAllocator& stackVariableAllocator)
         {
             if (const AZ::BehaviorParameter* resultType = behaviorMethod->GetResult())
@@ -390,7 +391,7 @@ namespace EditorPythonBindings
                 cleanUp();
             }
         }
-        
+
         void StackVariableAllocator::StoreVariableDeleter(VariableDeleter&& deleter)
         {
             m_cleanUpItems.emplace_back(deleter);