Avoid confusing use of "waypoints" for GPS log data

The HX870's GPS log functionality stores a history of past positions. This is completely unrelated to the radio's navigation functionality with routes and waypoints. To avoid confusion, the term "waypoints" should be avoided in the context of the GPS log.

This change replaces "waypoints" with "trackpoints", which is used by GPX for this purpose. Alternatives include simply "points" or "positions".

hxtool/cli/gpslog.py

@@ -54,7 +54,7 @@ def run(self):
 
         stat = hx.comm.read_gps_log_status()
         logger.info(f"Log size {stat['pages_used'] * 4}kB, "
-                    f"{stat['slots_used']} waypoints, "
+                    f"{stat['slots_used']} trackpoints, "
                     f"{stat['usage_percent']}% full")
         if stat["full_stop"]:
             logger.warning("Log is full. Logging is halted until erased")
@@ -116,14 +116,14 @@ def decode_gps_log(data: bytes) -> dict or None:
     log = {
         "header": hexlify(log_header).decode("ascii"),
         "unknown": hexlify(unknown).decode("ascii"),
-        "waypoints": []
+        "trackpoints": []
     }
 
     offset = 0x40
     while offset <= len(data) - 20:
         if data[offset:offset+4] == b"\xff\xff\xff\xff":
             break
-        log["waypoints"].append(unpack_log_line(data[offset:offset+20]))
+        log["trackpoints"].append(unpack_log_line(data[offset:offset+20]))
         offset += 20
 
     return log
@@ -146,7 +146,7 @@ def write_gpx(log_data: bytes,  file_name: str) -> int:
     gpx_track.segments.append(gpx_segment)
 
     # Create points:
-    for point in log["waypoints"]:
+    for point in log["trackpoints"]:
         p = gpxpy.gpx.GPXTrackPoint(
             latitude=point["latitude"],
             longitude=point["longitude"],
@@ -169,7 +169,7 @@ def write_json(log_data: bytes, file_name: str) -> int:
     if log is None:
         logger.warning("Log is blank. Not writing empty JSON log")
         return 0
-    for w in log["waypoints"]:
+    for w in log["trackpoints"]:
         w["utc_time"] = w["utc_time"].isoformat()
     with open(file_name, "w") as f:
         dump(log, f, indent=4)
@@ -195,7 +195,7 @@ def dump_log(log_data):
     if log is None:
         logger.info("Log is blank. Nothing to print")
         return 0
-    for wp in log["waypoints"]:
+    for wp in log["trackpoints"]:
         lat_deg, lat_min = to_hm(wp['latitude'])
         lat_dir = 'N' if lat_deg >= 0 else 'S'
         lon_deg, lon_min = to_hm(wp['longitude'])