Add a way to run CI on a specific crate

## What problem does this solve or what need does it fill?

Running the entire CI locally takes around 10 minutes on my machine, even though I have usually only made changes to one crate.
(I didn't see an option to specify a crate in `cargo run -p ci --help`, so I'm assuming it doesn't exist.)

## What solution would you like?

Have an option to run the ci only on one crate, maybe something like:
`cargo run -p ci -- -p bevy_ecs`?

## What alternative(s) have you considered?

- Run the entire CI
- Run the commands manually on the crate