Draft: Show ENERGY STAR logo on compliant systems

For ENERGY STAR certification purposes, the ENERGY STAR logo must be shown, there are three ways to do so:

• Sticker on the chassis
• Show logo for 5 seconds at boot
• Show logo in power settings panel

The first two options are both undesirable (expensive sticker, longer boot). As such, it makes sense to add support for this in g-c-c.

NOTE: I am marking this as WIP, because we might still want to change the exact name. In general, it will most likely be a variable set on the DMI device, but the exact details are still up to discussion. We could, e.g.:

• Have one array for all certifications.
• Define whether we want to include metadata in the udev rule (not relevant for g-c-c).

A corresponding rule could look like (hardware vendor configured after certification!):

SUBSYSTEM=="dmi", DEVPATH=="/devices/virtual/dmi/id", ENV{MODALIAS}=="*:pvrThinkPadX1Carbon7th:*", ENV{ENERGY_STAR_CERTIFIED}="8.0"

(With tooltip: This device is ENERGY STAR Certified.)

CC: @aday, @hadess, @nitin_exclusive, @banther