refs #619, function to get all ICAO designators as string list

src/blackmisc/aviation/aircrafticaocodelist.h

@@ -71,6 +71,9 @@ namespace BlackMisc
             //! For selection completion
             QStringList toCompleterStrings(bool withIataCodes = false, bool withFamily = false) const;
 
+            //! All ICAO codes, no duplicates
+            QStringList allIcaoCodes(bool noUnspecified = true) const;
+
             //! From our database JSON format
             static CAircraftIcaoCodeList fromDatabaseJson(const QJsonArray &array, bool ignoreIncomplete = true);
         };