This is a tracking task to add a new command, gs commit pick to cherry-pick a commit.
There will be two modes of use:

1. With an argument

   gs commit pick <hash>
   

   This just acts as an alias to git cherry-pick followed by an upstack restack.

2. Without an argument

   gs commit pick
   

   This should present a terminal UI similar to gs branch split for selecting a commit from available tracked branches.