Turbo prune with multiple scopes

[baptisteArno]

Describe the feature you'd like to request

I'd like to be able to use multiple scopes with the prune CLI command.

Describe the solution you'd like

turbo prune --scope=app1 --scope=app2

We can already do this with the run command.

Describe alternatives you've considered

[CJEnright]

I'm looking into this in https://github.com/vercel/turbo/discussions/2503

My use case is that we build all of our server side apps into a single image for simplicity. At run time we choose what app runs via environment variables.