Add more documentation for how to work with Deno Workspace

As the title suggests, I was hoping it would be possible to get some more documentation around the use of deno workspaces?

The [current documentation](https://docs.deno.com/runtime/manual/basics/workspaces/) is lacking the following:

- How to import code from other workspaces
- Say there is a ModuleA and ModuleB in a Deno workspace, how can I import MethodA from ModuleA in ModuleB?
- How will this translate when deploying the modules to JSR?
- How to run deploy for just one of the modules, or a selected set of modules
- Recommended way of bumping module versions
- Maybe a subcommand could be introduced that works in the similar way as the script for bumping in std?
- Alternatively, publish the script for easy usage in other projects that wants to follow the best practices?
- Recommended way to deploy test versions (release candidates) of selected modules (e.g. `0.0.0-rc.1`)