devices.xml: add Philips Hue Dimmable Light Bulb
devices.xml: add Philips Hue Dimmable Light Bulb

Signed-off-by: David Bednařík <88d9943afef8e94dd193d4f63839e0855f8bd24c@stud.fit.vutbr.cz>
Acked-by: Jan Viktorin <3eab6ac54c005c4408f608556a6663b7f2abede7@fit.vutbr.cz>

BeeeOn/server,BeeeOn/server,BeeeOn/server,BeeeOn/server