* fix: Get current values for MPM options
* fix: Don't show sub-proto dropdown when empty
* Add suggested call to `update()`
* Add callback to refresh when subtype changed
* Trip `SetValueHandler` rather than setting value
Thank you to @raphaelcoeffic for the hint ;)
* fix: Saving values when changed is a good idea!
* Load option flags properly when using internal proto list
* NumberEdit fields don't implement LV_EVENT_VALUE_CHANGED, use update() instead
* Fix checkbox behaviour
* Fix autobind checkbox after switching away from DSM
* Fix more parameter needing update on MPM sub-proto changes
* fix: Also update servo rate if present
* fix: Channel mapping needs updating also
Co-authored-by: Raphael Coeffic <raphael.coeffic@frafos.com>