Allow to reopen devices after disable or suspend

[Lord-Grey]

Feature request

What problem does this feature solve?

Currently, devices do not always handle the situation properly, if hyperion is

• resumed after being suspended (e.g. CoreElec)
• enabled after a longer time and a device's state is not known/defined
  (e.g. Philips Hue or Nanoleaf was turned off or used otherwise).

How should this be implemented in your opinion?

• Clear differentiation between starting and stopping a device
• When switching on a device (after disable device, disable hyperion or system suspend),
  open the device and/or set appropriate device mode (for REST-Devices).

Are you willing to work on this yourself?

I already started.