uv tool run suggest valid commands when command is not found

[blueraft]

Summary

Resolves #4979.

Test Plan

cargo test

[T-256]

As new user I expect to hint about --from when not used:

However, the following executables are available via `uvx --from fastapi-cli <EXECUTABLE>`:
    - fastapi.exe

[blueraft]

As new user I expect to hint about --from when not used:

However, the following executables are available via `uvx --from fastapi-cli <EXECUTABLE>`:
    - fastapi.exe

Thanks! that makes sense, I went with uv tool run --from cmd <EXECUTABLE> instead because uvx is just an alias.

[charliermarsh]

Nice, thanks!

[j178]

Are executables from sub-depencencies considered as available? For instance, uv tool run --from fastapi, uvicorn is also an available executable, but it is not listed here.

[zanieb]

I think we'll want a separate flag to opt-in to that, per #4994

Maybe we should even warn or error if someone uses an executable that's not provided by the --from package?