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/Resources/ProjectManager.qrc

@@ -11,6 +11,9 @@
         <file>iOS.svg</file>
         <file>Linux.svg</file>
         <file>macOS.svg</file>
+        <file>DefaultProjectImage.png</file>
+        <file>ArrowDownLine.svg</file>
+        <file>ArrowUpLine.svg</file>
         <file>Backgrounds/FirstTimeBackgroundImage.jpg</file>
     </qresource>
 </RCC>