add device and port detection on linux

examples/scan_for_devices.py

@@ -0,0 +1,26 @@
+"""Program to scan for hardware
+   To run: python examples/scan_for_devices.py
+"""
+
+import sys
+import meshtastic
+from meshtastic.supported_device import get_unique_vendor_ids, active_ports_on_supported_devices
+from meshtastic.util import detect_supported_devices
+
+# simple arg check
+if len(sys.argv) != 1:
+    print(f"usage: {sys.argv[0]}")
+    print("Detect which device we might have.")
+    sys.exit(3)
+
+vids = get_unique_vendor_ids()
+print(f'Searching for all devices with these vendor ids {vids}')
+
+sds = detect_supported_devices()
+if len(sds) > 0:
+    print('Detected possible devices:')
+for d in sds:
+    print(f' name:{d.name}{d.version} firmware:{d.for_firmware}')
+
+ports = active_ports_on_supported_devices(sds)
+print(f'ports:{ports}')