[IMP] firmware: Application Updates * Disable S/PDIF when not running at 44.1khz sample rate * Fix up styling and spelling issues

Support PDC display configuration on single line UIs, do not offer RADIO/BMBT display yet.

Improve usability by changing the display as soon as engaging Reverse to have consistent experience regardless of wall proximity. (eg do not delay the display until 1m / 40inch close).

Reorganize display code, validate PDC response.

Display PDC distances on HIGH IKE.

Display PDC distance. On reversing, display shortest distance to obstacle on IKE. Configurable in Settings -> Comfort. TODO: add BMBT screen display support TODO: add HIGH cluster display support

Add support for setting minimum zoom in UI. Use Distance units from BMBT settings.

Add missing zoom step

Honor the configuration.

Configuration of AutoZoom in UI and in upgrade.