Adds initial intermediate qt6 porting state

qt6-after/qt6-migrated-legatus/Lts/Common/LtsWidgets/lts_wait_dialog.cpp

@@ -0,0 +1,17 @@
+#include "lts_wait_dialog.h"
+#include "lts_global_wait_dialog.h"
+
+
+namespace LtsWidgets
+{
+LtsWaitDialog::LtsWaitDialog(const QString &customText)
+{
+  LtsGlobalWaitDialog::getInstance()->wait(customText);
+}
+
+
+LtsWaitDialog::~LtsWaitDialog()
+{
+  LtsGlobalWaitDialog::getInstance()->done();
+}
+}