[FEAT] Screen brightness controls

[mikejgray]

Objective

There should be intents to handle brightness controls on the Mark 2.

Initial Implementation Requirements

• Screen On
• Screen Off
• Screen percentage 0-100%

Other Considerations

No response

[NeonDaniel]

Consider also a separate skill like the volume skill that only deals with screen controls.. I could see this integrating with the GUI and/or a PHAL plugin (i.e. dimming a matrix display like the Mark1) for the actual hardware interface

[builderjer]

It could then support hdmi also

[JarbasAl]

the enclosure api defines a brightness control message (for the mk1, this was for eyes),
a skill for the enclosure API exists here https://github.com/OVOSHatchery/ovos-skill-mark1-ctrl , on my TODO to get it updated

the dimming is controlled by the shell companion plugin, we can probably unify the bus messages namespace and make the shell companion plugin respect the existing enclosure api

[JarbasAl]

It could then support hdmi also

also supported by the ovos-shell-companion plugin

[builderjer]

But not with voice. Guess the skill should just emit a bus message?