add high resolution magnetic field message

dronecan/sensors/magnetometer/1043.MagneticFieldStrengthHiRes.uavcan

@@ -0,0 +1,5 @@
+#
+# Magnetic field readings, in Gauss, in body frame, high resolution version
+
+uint8 sensor_id
+float32[3] magnetic_field_ga

list_ids.py

@@ -0,0 +1,25 @@
+#!/usr/bin/env python3
+'''
+list all messages sorted by DTID
+'''
+
+import sys
+import logging
+
+from dronecan import dsdl
+
+parsed = list(dsdl.parse_namespaces(['uavcan','com','ardupilot', 'dronecan']))
+if not parsed:
+    print("Failed to parse namespaces")
+    sys.exit(1)
+
+parsed = [ p for p in parsed if p.default_dtid is not None]
+parsed.sort(key=lambda x: x.default_dtid)
+
+KIND_MAP = {
+    0: "Service",
+    1: "Broadcast",
+}
+
+for p in parsed:
+    print(p.default_dtid, KIND_MAP[p.kind], p.full_name)