qt6: nglcompression, widgets, dialog fixes: remove QTextCodec, QStringRef/splitRef, QDesktopWidget, use QMultiMap and Qt6 APIs; adjust QtConcurrent::run wrappers; replace endl with newline

build/Z/src/CTestTestfile.cmake

@@ -0,0 +1,17 @@
+# CMake generated Testfile for 
+# Source directory: /repo/Z/src
+# Build directory: /repo/build/Z/src
+# 
+# This file includes the relevant testing commands required for 
+# testing this directory and lists subdirectories to be tested as well.
+subdirs("ngldb")
+subdirs("tcpserver")
+subdirs("QtSingleApplication")
+subdirs("WMS_Interface")
+subdirs("nglapplication")
+subdirs("nglcompression")
+subdirs("nglsettings")
+subdirs("ngltranslator")
+subdirs("ngltools")
+subdirs("nglwidgets")
+subdirs("NGLLogger")