TrackPoint: all sensors are the same - no need to distinguish the source of a TrackPoint (BLE sensor vs GPS).

Part of #1187.

src/main/java/de/dennisguse/opentracks/io/file/exporter/CSVTrackExporter.java

@@ -136,14 +136,7 @@ public class CSVTrackExporter implements TrackExporter {
             while (trackPointIterator.hasNext()) {
                 if (Thread.interrupted()) throw new InterruptedException();
 
-                TrackPoint trackPoint = trackPointIterator.next();
-
-                switch (trackPoint.getType()) {
-                    case SEGMENT_START_MANUAL, SEGMENT_END_MANUAL, SEGMENT_START_AUTOMATIC, SENSORPOINT, TRACKPOINT ->
-                            writeTrackPoint(columns, trackPoint);
-                    default ->
-                            throw new RuntimeException("Exporting this TrackPoint type is not implemented: " + trackPoint.getType());
-                }
+                 writeTrackPoint(columns, trackPointIterator.next());
             }
         }
     }

src/main/java/de/dennisguse/opentracks/io/file/exporter/GPXTrackExporter.java

@@ -158,15 +158,18 @@ public class GPXTrackExporter implements TrackExporter {
                             sensorPoints.add(trackPoint);
                         }
                     }
-                    case SENSORPOINT -> sensorPoints.add(trackPoint);
                     case TRACKPOINT -> {
                         if (!wroteSegment) {
                             // Might happen for older data (pre v3.15.0)
                             writeOpenSegment();
                             wroteSegment = true;
                         }
-                        trackDistance = trackDistance.plus(writeTrackPoint(track.getZoneOffset(), trackPoint, sensorPoints, trackDistance));
-                        sensorPoints.clear();
+                        if (trackPoint.hasLocation()) {
+                            trackDistance = trackDistance.plus(writeTrackPoint(track.getZoneOffset(), trackPoint, sensorPoints, trackDistance));
+                            sensorPoints.clear();
+                        }  else {
+                            sensorPoints.add(trackPoint);
+                        }
                     }
                     default ->
                             throw new RuntimeException("Exporting this TrackPoint type is not implemented: " + trackPoint.getType());

src/main/java/de/dennisguse/opentracks/io/file/exporter/KMLTrackExporter.java

@@ -177,7 +177,7 @@ public class KMLTrackExporter implements TrackExporter {
                         writeCloseSegment();
                         wroteSegment = false;
                     }
-                    case SENSORPOINT, TRACKPOINT -> {
+                    case TRACKPOINT -> {
                         if (!wroteSegment) {
                             // Might happen for older data (pre v3.15.0)
                             writeOpenSegment();

src/main/java/de/dennisguse/opentracks/io/file/importer/KmlTrackImporter.java

@@ -308,9 +308,8 @@ public class KmlTrackImporter extends DefaultHandler implements XMLImporter.Trac
             Instant time = whenList.get(i);
             Location location = locationList.get(i);
 
-            TrackPoint trackPoint = new TrackPoint(TrackPoint.Type.SENSORPOINT, time);
+            TrackPoint trackPoint = new TrackPoint(TrackPoint.Type.TRACKPOINT, time);
             if (location != null) {
-                trackPoint.setType(TrackPoint.Type.TRACKPOINT);
                 trackPoint.setLocation(location);
             }