Combine namespaces in settings files into single line

scwx-qt/source/scwx/qt/settings/palette_settings.hpp

@@ -9,11 +9,7 @@
 #include <memory>
 #include <string>
 
-namespace scwx
-{
-namespace qt
-{
-namespace settings
+namespace scwx::qt::settings
 {
 
 class PaletteSettings : public SettingsCategory
@@ -45,6 +41,4 @@ private:
    std::unique_ptr<Impl> p;
 };
 
-} // namespace settings
-} // namespace qt
-} // namespace scwx
+} // namespace scwx::qt::settings