Final touches on the first pass of imgui hierarchy debugger

Signed-off-by: AMZN-Olex <5432499+AMZN-Olex@users.noreply.github.com>

Gems/Multiplayer/Code/Source/Debug/MultiplayerDebugHierarchyReporter.h

@@ -15,6 +15,9 @@
 
 namespace Multiplayer
 {
+    /**
+     * /brief Provides ImGui and debug draw hierarchy information at runtime.
+     */
     class MultiplayerDebugHierarchyReporter
         : public AZ::EntitySystemBus::Handler
     {
@@ -22,15 +25,17 @@ namespace Multiplayer
         MultiplayerDebugHierarchyReporter();
         ~MultiplayerDebugHierarchyReporter() override;
 
-        //! main update loop
+        //! Main update loop.
         void OnImGuiUpdate();
 
-        //! Draws bandwidth text over entities 
+        //! Draws hierarchy information over hierarchy root entities.
         void UpdateDebugOverlay();
 
         //! EntitySystemBus overrides.
+        //! @{
         void OnEntityActivated(const AZ::EntityId& entityId) override;
         void OnEntityDeactivated(const AZ::EntityId& entityId) override;
+        //! @}
 
     private:
         AZ::ScheduledEvent m_updateDebugOverlay;
@@ -46,7 +51,9 @@ namespace Multiplayer
 
         AZStd::unordered_map<NetworkHierarchyRootComponent*, HierarchyRootInfo> m_hierarchyRoots;
         void CollectHierarchyRoots();
-        
+
         char m_statusBuffer[100] = {};
+
+        float m_awarenessRadius = 1000.f;
     };
 }