♻️ Clean Up justfile

[ryancheley]

Based on the work in #1383 the justfile there are some commands which are helpful for the server admin and aren't usable by a non-server admin. I think these should be called out more specifically and added to a [server-admin] group.

For example, the recipe deploy require the server root password and is in the [deployment] group. A second group could be added to this to make it clearer that only a server admin would be able to use it.

There are also some commands which require a virtual environment, so adding them to a group called something like [venv-required] might be helpful ... or adding to the doc string that a virtual environment is required.

We can also add the following command so that it will run on Windows. This does not impact the ability to run on macOS

set windows-shell := ["powershell.exe", "-NoLogo", "-Command"]