Fix Project Manager Qt Ui files not Being Autogenerated (#588)

* Moved Qt files into to renamed 'S'ource

* Updated files after moving all Qt folder into Source

* Updated Source capitalization in cmake files list

* Adding newline to the end of project_manager_files.cmake

Co-authored-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

Code/Tools/ProjectManager/Source/ProjectManagerWindow.h

@@ -0,0 +1,57 @@
+/*
+ * All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
+ * its licensors.
+ *
+ * For complete copyright and license terms please see the LICENSE at the root of this
+ * distribution (the "License"). All use of this software is governed by the License,
+ * or, if provided, by the license below or the license accompanying this file. Do not
+ * remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *
+ */
+#pragma once
+
+#if !defined(Q_MOC_RUN)
+#include <ScreenDefs.h>
+
+#include <QMainWindow>
+#include <QStackedWidget>
+
+#include <AzCore/IO/Path/Path_fwd.h>
+#endif
+
+namespace Ui
+{
+    class ProjectManagerWindowClass;
+}
+
+namespace O3DE::ProjectManager
+{
+    class ProjectManagerWindow
+        : public QMainWindow
+    {
+        Q_OBJECT
+
+    public:
+        explicit ProjectManagerWindow(QWidget* parent, const AZ::IO::PathView& engineRootPath);
+        ~ProjectManagerWindow();
+
+        void BuildScreens();
+        QStackedWidget* GetScreenStack();
+
+    public slots:
+        void ChangeToScreen(ProjectManagerScreen screen);
+        void ResetScreen(ProjectManagerScreen screen);
+
+    protected:
+        void ConnectSlotsAndSignals();
+
+    protected slots:
+        void HandleProjectsMenu();
+        void HandleEngineMenu();
+
+    private:
+        QScopedPointer<Ui::ProjectManagerWindowClass> m_ui;
+    };
+
+} // namespace O3DE::ProjectManager