feat: implement `nrx` command

[Dimava]

Description

This PR adds nrx command, which is an "execute local binary" command:

> nrx cowsayjs moo
> npm exec --no cowsayjs moo
> yarn@1 run cowsayjs moo
> yarn exec cowsayjs moo
> pnpm exec cowsayjs moo

Unlike dlx-style commands (npx/yarn dlx) this can't install new packages and must use existing ones If the binary is missing, this command is guaranteed to fail

Linked Issues

(unrelated) #140

Additional context

This Draft PR is missing:

• [ ] check if there's nrx command for some other stuff (as there were nx and nix)
• [ ] add tests
• [ ] add readme docs
• [ ] add a proper bun command
• [ ] remove console.log('>', command)
• [ ] manually test in pnpm@6
• [x] manually test that nrx can run binary
• [x] manually test that nrx cannot run missing binary

Please tell me if there is interest in this command, so I can either procees to making tests/docs or leave it as-is (it works for me locally, so I don't really need tests/docs if this is not going to be upstreamed)

[Dimava]

cc @antfu

[antfu]

Thanks for bringing this up, but sorry we no longer accept adding new commands.

[mattrossman]

@antfu Do you think this behavior could be achieved without adding a new command?

I use Firebase CLI and Prisma CLI in my projects (installed locally) and currently there is no way to reliably execute these with ni.

When using npm as a package manager, it works as expected because npx attempts to run local binaries before download. However, the translated commands for other package managers force a download from the registry, which causes either version mismatches or lookup failure.

Some packages use a different name for their package vs binary. For instance, the firebase CLI is distributed under the firebase-tools package. This means with npm I can write nlx firebase but with other package managers I have to write nlx firebase-tools.

Perhaps nlx could align more with npm's behavior, defaulting to local binaries before performing a registry lookup?