{LYN-4514} Engine updates to enable PAB for the Blast Gem (#2140)

* {LYN-4514} Engine updates to enable PAB for the Blast Gem

* Engine updates to enable Python Asset Building for the Blast Gem
* added API to detect IsPythonActive()
* ExportProductList behavior
* scene manifest usage of generated assetinfo
* updated ScriptProcessorRuleBehavior to handle OnPrepareForExport

Tests: new tests for scene behavior via ExportProduct

Signed-off-by: Jackson <23512001+jackalbe@users.noreply.github.com>

* updated base on PR feedback
added more comments for IsPythonActive()
added a serializeContext for export product list

Signed-off-by: Jackson <23512001+jackalbe@users.noreply.github.com>

Code/Tools/SceneAPI/SceneCore/Components/ExportingComponent.cpp

@@ -7,6 +7,8 @@
 
 #include <AzCore/Serialization/SerializeContext.h>
 #include <SceneAPI/SceneCore/Components/ExportingComponent.h>
+#include <SceneAPI/SceneCore/Events/ExportProductList.h>
+#include <AzCore/RTTI/BehaviorContext.h>
 
 namespace AZ
 {
@@ -31,6 +33,12 @@ namespace AZ
                 {
                     serializeContext->Class<ExportingComponent, AZ::Component>()->Version(2);
                 }
+
+                AZ::BehaviorContext* behaviorContext = azrtti_cast<AZ::BehaviorContext*>(context);
+                if (behaviorContext)
+                {
+                    Events::ExportProductList::Reflect(behaviorContext);
+                }
             }
         } // namespace SceneCore
     } // namespace SceneAPI