CLI: include collection diffs when deploying #1524

When deploying a project with the v2 openfn project deploy, we print a rich diff telling users which workflows have changed and how.

We need to extend the readout here to include changes to collections (collections added and collections removed, includin their name)

In fact it's not just collections - we should start tracking a "project diff" which shows all project-level changes, including collections.

Note that there is a JSON diff and a text diff: both need updating.