feat(fun/idual): Introduce real CLI that can send all commands

Adds an idualctl CLI that can be used to control the lights.

fun/idual/idualctl

@@ -0,0 +1,39 @@
+#!/usr/bin/env python
+
+import idual
+import sys
+
+def help():
+    print('Available commands:')
+    for cmd in idual.commands:
+        print('- ' + cmd)
+    sys.exit(0)
+
+def handle(ctrl, cmd):
+    if cmd == 'help':
+        help()
+    elif cmd == 'wakey':
+        ctrl.wakey()
+        sys.exit(0)
+    elif cmd == 'on':
+        print('Turning on the lights')
+        ctrl.send_cmd(cmd)
+    elif cmd == 'off':
+        print('Turning off the lights')
+        ctrl.send_cmd(cmd)
+    elif cmd in idual.commands:
+        print('Sending ' + cmd + '-command')
+        ctrl.send_cmd(cmd)
+    else:
+        print('unknown command \'' + cmd + '\'')
+        sys.exit(1)
+
+if __name__ == "__main__":
+    if len(sys.argv) == 1:
+        help()
+
+    print('Initialising light controller')
+    ctrl = idual.LightController()
+
+    for cmd in sys.argv[1:]:
+        handle(ctrl, cmd)