Currently a user is expected to dune tools install ... for each dev tool they are using, or to wait for other tools like their editor to trigger the install. It would be good to have an easy way to install all the dev tools that a repository might declare.

One way to make this easier for users would be to read :with-dev-setup from the project and install each tool that we understand, warning if we don't. The user would write dune tools setup and if ocamlforamt or ocaml-lsp-server was included with :with-dev-setup, then we can install them also.

We currently completely ignore :with-dev-setup during solving, so it seems like a good fit to make dune tools work with it.