[feat] Visualize running firmware updates

[LordMike]

Is your feature request related to a problem? Please describe.
See #2093

Visualize a progress bar for OTA updates, so the progress is visible to users.

Describe the solution you'd like
@robertsLando hinted to making a new column on the devices list for this, but I suggest reusing the "fw" column -- it will only contain additional data when an update is running.

I've tried to prototype it with HTML editing in the picture below. (I know that a more fancy progress bar exists, so please use that :P)

[LordMike]

Could also include the next-version (use an icon for the arrow, ofc.):

[robertsLando]

Thanks for the issue @LordMike , will try to find some time next week :)