Project Manager Projects Screen Dynamically Shows Projects Loaded from O3DE (#873)

* Projects Home Screen Dynamically displays Projects from O3DE and can open Project settings editor

* Seperated out CreateProjectCtrl and UpdateProjectCtrl

* Moved source level statics back into class headers

* Updated background image location

Code/Tools/ProjectManager/Source/ScreensCtrl.h

@@ -35,6 +35,9 @@ namespace O3DE::ProjectManager
         ScreenWidget* FindScreen(ProjectManagerScreen screen);
         ScreenWidget* GetCurrentScreen();
 
+    signals:
+        void NotifyCurrentProject(const QString& projectPath);
+
     public slots:
         bool ChangeToScreen(ProjectManagerScreen screen);
         bool ForceChangeToScreen(ProjectManagerScreen screen, bool addVisit = true);