move packages/{device,deviceinfo}.py to devices/

devices/cli.py

@@ -0,0 +1,13 @@
+import click
+
+from .device import get_devices
+
+
+@click.command(name='devices')
+def cmd_devices():
+    'list the available devices and descriptions'
+    devices = get_devices()
+    if not devices:
+        raise Exception("No devices found!")
+    for d in sorted(devices.keys()):
+        print(devices[d])