Added webengine initializer

ui/qt/webengine/cpp/webengine.cpp

@@ -0,0 +1,6 @@
+#include <QtWebEngine>
+#include "webengine.h"
+
+void webengineInitialize() {
+	QtWebEngine::initialize();
+}

ui/qt/webengine/cpp/webengine.h

@@ -0,0 +1,14 @@
+#ifndef WEBENGINE_H
+#define WEBENGINE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void webengineInitialize();
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // WEBENGINE_H