Compile again after renaming and moving files

Cleaned up namespaces
Renamed a couple of functions and added comments

Signed-off-by: Guthrie Adams <guthadam@amazon.com>

Gems/Atom/Tools/AtomToolsFramework/Code/Source/PreviewRenderer/PreviewRendererLoadState.cpp

@@ -18,7 +18,7 @@ namespace AtomToolsFramework
 
     void PreviewRendererLoadState::Start()
     {
-        m_renderer->LoadAssets();
+        m_renderer->LoadContent();
         m_timeRemainingS = TimeOutS;
         AZ::TickBus::Handler::BusConnect();
     }
@@ -33,11 +33,11 @@ namespace AtomToolsFramework
         m_timeRemainingS -= deltaTime;
         if (m_timeRemainingS > 0.0f)
         {
-            m_renderer->UpdateLoadAssets();
+            m_renderer->UpdateLoadContent();
         }
         else
         {
-            m_renderer->CancelLoadAssets();
+            m_renderer->CancelLoadContent();
         }
     }
 } // namespace AtomToolsFramework