expose vibroscopy nodes to output widgets

[mikibonacci]

• [ ] I would like to provide to the widgets only nodes coming from the aiida-vibroscopy workchains, so they can be used also outside the app in case. This may be a problem for app tests, but we will see in that case.
• [ ] As additional task, I would like to put the number of the mode in the table, so I can easily go to the dropdown and select