[Feature Request] Show the number of changed files when a folder is collapsed in the file panel

[mtpauly]

It would be nice to have the option to display the number of changed files when a folder is collapsed.

This could look like the number of added/deleted/modified files after the folder path

lua/plugins 1A 2D 3M

Or just a count of the number of collapsed files

lua/plugins (6)

[dlyongemallo]

@mtpauly FYI: This feature is implemented in my fork.