QmlDesigner: Add some qen parsing functionality

Added Uniform class to store composition node uniforms for shader and ui usage
Implement some shader code parsing
create unique id for composition nodes (basic implementation)

Change-Id: I07ece2058e158b01590bd9b995c179275f489a1c
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>

src/plugins/qmldesigner/components/effectmaker/uniform.cpp

@@ -0,0 +1,15 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include "uniform.h"
+
+#include <QJsonObject>
+
+namespace QmlDesigner {
+
+Uniform::Uniform(const QJsonObject &props)
+{
+    Q_UNUSED(props)
+}
+
+} // namespace QmlDesigner