Mob Programming: Add `--tree -d` to `lsd`

We're going to hack on https://github.com/Peltoche/lsd/issues/295 as a group to get a PR in on one of the most popular Rust CLI tools, lsd.

Huzzah!

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https://github.zoom.us/j/762355860?pwd=aUJCdXNPVDNYRVcydkFZd1hnUXhtUT09