[Feature request] More configurable LED options

[TommySharpNZ]

I would like to be able to use addressable LEDs mounted on or close to that battery that allow me to visualise the state of the battery such as charge/discharge, battery issues etc.

I have a Stark CMR which does have available gpio outputs.

We should consider a strip of LEDs but in my case I want a ring of LEDs that remind me of Tony Stark's Arc Reactor.

• White : Discharging
• Blue : Charging
• Red : Battery Issue
• Orange : Disabled/Off
• Effects : Pulse or Chase with speed reflecting charge/discharge speed

Obviously colours and effects would be configurable.

I know this is mostly just eye candy and could be done using a separate ESP32 but having it integrated would mean more responsive and also less points of failure.

[dalathegreat]

First step of this added: #916