This implements a simple Project listing page at `/projects` - just a table for a list of projects:

...and an empty state:

There isn't too much data to show at the moment. It'll be nice in the future to show the following fields and improve the UI with it:
- An icon
- A list of users using the project
- A description
However, this brings in a lot of scaffolding to make it easier to build pages like this (`/organizations`, `/workspaces`, etc).
In particular, I brought over a few things from v1:
- The `Hero` / `Header` component at the top of pages + sub-components
- A `Table` component for help rendering table-like UI + sub-components
- Additional palette settings that the `Hero`