"Low impact" mode for commands in workspaces/monorepos

[dallonf]

It seems that pnpm does a lot when you install or update a package. In a large monorepo, this can sometimes mean it goes and silently updates a dependency or sub-dependency in an unrelated package! This results in the whole repo being quite brittle.

It would be really nice if you could run something like pnpm --filter my-app-1 install some-dep --low-impact and have confidence that my-app-2 will be completely untouched.