Move the participants filter UI from within core_user to a re-usable API

Instance setup Fresh install an instance using this repo or Upgrade the current instance using this repo Test scenario Login to the site as a site admin Create a course Create a couple of users with different data Navigate to the course > participants Enroll all the created users Use keyword as a matching condition Verify that the condition returns the correct value Use roles as the matching condition Verify that the condition returns the correct value Use enrollment method as the matching condition Verify that the condition returns the correct value Change the match condition to All Use keyword as a matching condition Verify that the condition returns the correct value Use roles as the matching condition Verify that the condition returns the correct value Use enrollment method as the matching condition Verify that the condition returns the correct value