uutils/coreutils notes

## Commands

### cp

[PR: make more types public and add more documentation](https://github.com/uutils/coreutils/pull/5152)

### References Historical

[Issue: allow a deeper integration with nushell](https://github.com/uutils/coreutils/issues/5088)
[crawl walk run with nushell](https://docs.google.com/spreadsheets/d/1MP9V8BTtcy_3DIUT8025yTcGrjkIJ-ZKFT0uvJFw0Lo/edit#gid=0)