Support for refresh rate and sync interval (#2989)

* Add support for querying the refresh rate and sync interval

Gems/Atom/Tools/AtomToolsFramework/Code/Include/AtomToolsFramework/Viewport/RenderViewportWidget.h

@@ -121,6 +121,8 @@ namespace AtomToolsFramework
         bool CanToggleFullScreenState() const override;
         void ToggleFullScreenState() override;
         float GetDpiScaleFactor() const override;
+        uint32_t GetSyncInterval() const override;
+        uint32_t GetDisplayRefreshRate() const;
 
     protected:
         // AzFramework::InputChannelEventListener ...

Gems/Atom/Tools/AtomToolsFramework/Code/Source/Viewport/RenderViewportWidget.cpp

@@ -465,4 +465,14 @@ namespace AtomToolsFramework
     {
         return aznumeric_cast<float>(devicePixelRatioF());
     }
+
+    uint32_t RenderViewportWidget::GetDisplayRefreshRate() const
+    {
+        return 60;
+    }
+
+    uint32_t RenderViewportWidget::GetSyncInterval() const
+    {
+        return 1;
+    }
 } //namespace AtomToolsFramework