Support user meta and custom relationship fields

Hey Mateusz,

I wonder if it would be possible for ACF: Better Search to also search for acf meta when doing a search in the user admin list.

Also, we have a custom ACF field that basically extends upon the ACF user relation field (saves a user ID) in order to relate CPTs to a user ID and display some user meta data there.
So the idea basically is to be able to also search for this (related) user meta when doing a search in the CPT’s admin list.

Do you think this could be possible? Are there certain hooks in your plugin that you would recommend?

Thanks in advance,
Daniel