Make 'git stash list' more informative

[Yuri <yuri@rawbw.com>]

Currently 'git stash list' prints lines like this:
stash@{10}: WIP on main: 3f802b772d88 science/py-pymatgen: update 
2025.1.24 → 2025.2.18


It contains the last commit's subject which often/usually doesn't really 
describe the stash entry.


I propose to amend WIP stash entry descriptions with size, number of 
dirs and files, and time description, so that the above entry might look 
like this:

stash@{10}: WIP on main: 3f802b772d88 science/py-pymatgen: update 
2025.1.24 → 2025.2.18 (+20, -5, 3 dirs, 5 files, 17 days ago)



It would add info about the number of changed lines, number of affected 
directories and files, and how old this stash record is.


This would make WIP stash lines much more informative and they would 
actually describe better what is in them.




Thanks,
Yuri