Issue-42 - Add implicit vertical number

FlowTracker2 files don't have an explicit station number, but the FlowTracker2 visualization software implicitly counts
the verticals starting at 0.

Use the same logic in the plugin, so that all the AQTS verticals match the station # shown in the SonTek software.

Author: Doug Schmidt

src/Flowtracker2Plugin/DataFileParser.cs

@@ -138,7 +138,7 @@ private ParseFileResult AppendResults(LocationInfo locationInfo)
 
                 foreach (var station in DataFile.Stations)
                 {
-                    manualGauging.Verticals.Add(CreateVertical(station, startStation, endStation));
+                    manualGauging.Verticals.Add(CreateVertical(manualGauging.Verticals.Count, station, startStation, endStation));
                 }
 
                 AdjustUnknownTotalDischargePortion(manualGauging);
@@ -306,7 +306,7 @@ private DischargeMethodType CreateDischargeMethodType()
             throw new ArgumentException($"DischargeEquation='{dischargeEquation}' is not supported");
         }
 
-        private Vertical CreateVertical(Station station, Station startStation, Station endStation)
+        private Vertical CreateVertical(int sequenceNumber, Station station, Station startStation, Station endStation)
         {
             var verticalType = station == startStation && ValidBankTypes.Contains(station.StationType)
                 ? VerticalType.StartEdgeNoWaterBefore
@@ -316,6 +316,7 @@ private Vertical CreateVertical(Station station, Station startStation, Station e
 
             var vertical = new Vertical
             {
+                SequenceNumber = sequenceNumber,
                 TaglinePosition = UnitConverter.ConvertDistance(station.Location),
                 Comments = station.Comment,
                 MeasurementTime = station.CreationTime,