Include 'stale process' detection as part of gdk doctor
Overview
At times, some GDK services can become 'stale' and are not able to be stopped via gdk stop/restart. A recent example is rails-background-jobs didn't stop properly but instead returned a state of timeout and needed intervention outside of the gdk command line tool (e.g. kill <pid>).
Related
Proposal
As a first iteration, update gdk doctor to look at rails-background-jobs for now to see if it's 'stale' and make recommendation(s) to address.