Imported from open-flysky/Flysky-OpenTX-Test-Branch
* companion: Don't nuke `stickDeadZone` setting
* Implement data storage properly
* Add missing check for NV14 storage struct sizes
* Formatting
* Use one less byte in the packed data struct
Thanks @raphaelcoeffic :)
* Move setting of stickDeadZone default
* Use a Choice combo rather than NumberEdit
* Good riddance magic number
* Also set default stick zone if setting is missing
* Teach tests about `STICK_DEAD_ZONE`
* Tweak choice width
* Cpn NV14 add stick dead zone to hardware and section labels
* Cpn NV14 align default pot names to radio
Co-authored-by: elecpower <neilh713@tpg.com.au>