_(Feature Requests #24962)_

_"Before you mark this PR as ready for review, make sure that you
have:"_

* [x] Added a solid test coverage and/or screenshots from doing manual
testing
* [x] Done a self-review taking into account security and performance
aspects
* [x] Aligned any UI changes with the [UI
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)

Release Notes:

- Added a `sort_order` to `project_panel` settings which dictates how
files and directories are sorted relative to each other in a
`sort_mode`.

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Co-authored-by: Smit Barmase <heysmitbarmase@gmail.com>