we must write these recognizers using publicly available apis to ensure
that we don't accidentally start using private struct data

this requires a lot of changes to properly manage the config value for finger
size and update the recognizer data when changed (which external recognizers
will need to monitor an event to achieve) and then also to change some
recognizers so they don't use memset and unset the finger_size value

ref TT8503

Depends on D11170