Make sort logic available outside sort-by

[rgwood]

Description

This PR moves sorting logic so it is accessible by consumers of the nu-command crate. It also creates 2 helper functions. This work is being done to enable interactive sorting of card results in Nana.

Tests

Make sure you've done the following:

• Add tests that cover your changes, either in the command examples, the crate/tests folder, or in the /tests folder.
• Try to think about corner cases and various ways how your changes could break. Cover them with tests.
• [N/A] If adding tests is not possible, please document in the PR body a minimal example with steps on how to reproduce so one can verify your change works.

Make sure you've run and fixed any issues with these commands:

• cargo fmt --all -- --check to check standard code formatting (cargo fmt --all applies these changes)
• cargo clippy --workspace --features=extra -- -D warnings -D clippy::unwrap_used -A clippy::needless_collect to check that you're using the standard code style
• cargo test --workspace --features=extra to check that all the tests pass

[stormasm]

@rgwood for now until you can figure out a better place for it I would put
sort_utils.rs in filters at the same level of sort_by.rs
instead of one level up in nu-command.

[rgwood]

@stormasm 1 problem with that: the filters module is not public and would need to be made public.

[stormasm]

oh !
that is a problem... bummer....
and making it public is not a good solution...
@jntrnr may have an idea as to a good spot...

this actually hearkens back to our conversation the other day on discord when we were discussing this idea of the melding of nana and nushell...

so we we need a place where the "rust nana code lives"
that nushell has access to as well....
kind of like another crate idea / but its probably too early for that...

so I guess the spot you have it is fine (for now)....

[stormasm]

@rgwood so I read the discord channel after my previous message here and saw that @jntrnr said option 2 of nu-utils but then @fdncred had a great point about why that is not a good spot...

so since you are working a lot on the Nana code

I would probably plan on eventually when you see fit or a "good time"

to start up that new crate with some appropriate name for all future nana / nushell melding code....
and this sorting code eventually would be the first candidate for it...

[stormasm]

@rgwood here is one name for a crate that is kind of obvious, not sure if you like it...

nu-nana

Not sure what other folks think...

[rgwood]

@stormasm not sure about nu-nana; this sorting code is needed by the sort-by command as well as Nana. I think a new crate will probably need to be more general than that.

[stormasm]

@rgwood
cool makes sense...

so we are looking for a crate name for code
that is used both by nushell and nana

or our melding code of both projects...

it will be fun to come up with a name that works...
at least we know one thing...
the sort_util.rs code should probably go in a new crate.
so finding the name will be interesting...

[fdncred]

I'd also add that Nana is kind of a codename too. We probably shouldn't embed it into code. I'm betting we eventually rename it.

[rgwood]

I'll merge this today if there are no objections.

[fdncred]

lgtm