feat: group depending quadlets

[axel7083]

Description

On the Quadlet Lists, add Quadlets requires as children.

Notes

• Disabling the selection of the children to avoid deletion issue
• Quadlet can appear several time (one at top level, then in the children row of any quadlet depending on it.)
• Different icon is used for children (dependant quadlet) to differentiate them)

Screenshots

Related issues

Require rebase after

• feat(backend): parse quadlets requires #483

Fixes #483

Testing

• unit tests has been provided

1. Generate an image quadlet (e.g. nginx.image)
2. Generate a container quadlet (e.g. nginx.container)
3. Edit the container quadlet and change the image=nginx to image=nginx.image (must match the image quadlet you created at step 1).
4. assert Quadlet List page properly display the image as a child of the container