project: Move GcalEditDialog and friends to src/gui/event-editor/

src/gui/meson.build

@@ -1,4 +1,5 @@
 subdir('calendar-management')
+subdir('event-editor')
 subdir('gtk')
 subdir('views')
 
@@ -11,18 +12,11 @@ built_sources += gnome.compile_resources(
 )
 
 sources += files(
-  'gcal-alarm-row.c',
   'gcal-application.c',
   'gcal-calendar-popover.c',
-  'gcal-date-chooser.c',
-  'gcal-date-chooser-day.c',
-  'gcal-date-selector.c',
-  'gcal-edit-dialog.c',
   'gcal-event-widget.c',
-  'gcal-multi-choice.c',
   'gcal-quick-add-popover.c',
   'gcal-search-button.c',
-  'gcal-time-selector.c',
   'gcal-weather-settings.c',
   'gcal-window.c',
 )