QmlDesigner: Implement camera frustum visualization for edit 3D

Task-number: QDS-1208
Change-Id: I3241fcdc68d01666a2536df32f170cd898cbd7af
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

src/tools/qml2puppet/qml2puppet.qbs

@@ -199,6 +199,8 @@ QtcTool {
             "editor3d/cameracontrolhelper.h",
             "editor3d/mousearea3d.cpp",
             "editor3d/mousearea3d.h",
+            "editor3d/camerageometry.cpp",
+            "editor3d/camerageometry.h",
             "qml2puppetmain.cpp",
         ]
     }