[FR] Add option to disable the blinking blue LED on the device

[JulienCote]

Is your feature request related to a problem? Please describe.
Not so much an issue as I find the blinking light to be annoying and unnecessary most of the time

Describe the solution you'd like
Add a settings to select from a few LED behaviours:

1. Always (the current behaviour)
2. Updates-Only (from what I could gather in Discussions, the light is used to show when an over-the-air update is being installed which presumably renders the unit inoperable for the duration of the updates. So keep the light going for those moments to convey that that's happening)
3. Never (never turn on the LED)

Describe alternatives you've considered
I considered putting a piece of duct tape over the unit. But software is more elegant than tape :)

Additional context
Creating this feature request to track my ask, but I can implement this solution