config: add x11proto dependency for libxau and SDDM

- Add x11proto to redbear-full.toml package list
- libxau recipe updated with x11proto dependency and custom build script
- Fixes libxau build failure: 'Package xproto was not found'

local/recipes/qt/qtbase/source/examples/sql/cachedtable/main.cpp

@@ -0,0 +1,20 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QApplication>
+
+#include "../connection.h"
+#include "tableeditor.h"
+
+//! [0]
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+    if (!createConnection())
+        return 1;
+
+    TableEditor editor("person");
+    editor.show();
+    return app.exec();
+}
+//! [0]