#14666 Simulator Events: Expand INSERT_DATE into insert-date events

INSERT_DATE statements are now expanded into one timeline event per
occurrence instead of a list of bare dates, so each generated date keeps
the COMMENT of its statement.

- New RimWellEventInsertDate (EventType::INSERT_DATE): a date-only event
  that generates no keyword, added with
  WellEventTimeline.add_insert_date_event(event_date, comment).
- The schedule generator writes the comment of an insert-date event as
  "--" lines directly below its DATES keyword.
- generate_schedule(_text) no longer takes additional_dates; insert-date
  events are part of the timeline, but keep the previous behavior of not
  being filtered by set_timestamp().
- SimulatorEventsDocument.report_dates and ApplyReport.report_dates are
  replaced by SimulatorEventsDocument.insert_date_events/insert_dates;
  merging files drops insert dates repeating both date and comment.

ApplicationLibCode/ProjectDataModel/WellEvents/RimWellEventTimeline.cpp

@@ -21,6 +21,7 @@
 #include "RimKeywordEvent.h"
 #include "RimWellEvent.h"
 #include "RimWellEventControl.h"
+#include "RimWellEventInsertDate.h"
 #include "RimWellEventKeyword.h"
 #include "RimWellEventPerf.h"
 #include "RimWellEventRawText.h"
@@ -355,6 +356,18 @@ RimWellEventRawText* RimWellEventTimeline::addRawTextEvent( const QDateTime& dat
     return event;
 }
 
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+RimWellEventInsertDate* RimWellEventTimeline::addInsertDateEvent( const QDateTime& date )
+{
+    auto* event = new RimWellEventInsertDate();
+    event->setEventDate( date );
+    m_events.push_back( event );
+    updateEditorsAfterEventChange();
+    return event;
+}
+
 //--------------------------------------------------------------------------------------------------
 ///
 //--------------------------------------------------------------------------------------------------