Add support for opening links in incognito mode on Linux & BSD (#4745)

Co-authored-by: Rasmus Karlsson <rasmus.karlsson@pajlada.com>

src/CMakeLists.txt

@@ -438,6 +438,12 @@ set(SOURCE_FILES
         util/TypeName.hpp
         util/WindowsHelper.cpp
         util/WindowsHelper.hpp
+        util/XDGDesktopFile.cpp
+        util/XDGDesktopFile.hpp
+        util/XDGDirectory.cpp
+        util/XDGDirectory.hpp
+        util/XDGHelper.cpp
+        util/XDGHelper.hpp
 
         util/serialize/Container.hpp