Group of groups?

Hi! Thanks for the great package.

To give context on what I mean, my scenario is as thus:

I have a `~/org/projects.org` file where headings are projects and subheadings are actions.
using `(:auto-parent t :file-path "project")` works great, and generates an example structure like this:

```
Set up syncthing
projects: NEXT ...

Look up how to group org-super-agenda groups
projects: NEXT ...
```

What I'd like is something like this:
```
Projects
Set up syncthing
projects: NEXT ...

Look up how to group org-super-agenda groups
projects: NEXT ...
```

Using `(:name "Projects" (:auto-parent t :file-path "project"))` doesn't seem to work. How would I go about doing this?

edit: Furthermore, a problem is that these headings become un-actionable, right? I can't change the states of them.