Camera Component, Editor Viewport Widget refactoring.

- Handle changing of active camera entirely inside CameraComponentController
- Remove a LOT of legacy Cry things related to cameras
- Add a CameraSystemComponent to handle ActiveCameraRequestBus and CameraSystemRequestBus

Signed-off-by: Yuriy Toporovskyy <toporovskyy.y@gmail.com>

Code/Legacy/CrySystem/LevelSystem/SpawnableLevelSystem.cpp

@@ -272,7 +272,7 @@ namespace LegacyLevelSystem
             // to avoid the hack in the renderer to not show anything if the camera is at the origin).
             CCamera defaultCam;
             defaultCam.SetPosition(Vec3(1.0f));
-            m_pSystem->SetViewCamera(defaultCam);
+            //m_pSystem->SetViewCamera(defaultCam);
 
             OnLoadingStart(levelName);
 
@@ -588,8 +588,8 @@ namespace LegacyLevelSystem
         Audio::AudioSystemRequestBus::Broadcast(&Audio::AudioSystemRequestBus::Events::PushRequestBlocking, oAudioRequestData);
 
         // Reset the camera to (0,0,0) which is the invalid/uninitialised state
-        CCamera defaultCam;
-        m_pSystem->SetViewCamera(defaultCam);
+        //CCamera defaultCam;
+        //m_pSystem->SetViewCamera(defaultCam);
 
         OnUnloadComplete(m_lastLevelName.c_str());