[Dashboard] Ability to remove certain elements from the display or to choose which elements to display

[nino-filigran]

Use case

Currently in a widget, if you want to know how many times a specific label is used, it would be nice to be able to filter out, after the query is done, from a display point of view onl, some data to only show data that matter.
For instance, if I have a donut filtering on all RFI with satus = closed and label = not empty, I maybe want to know the proportion of RFI having labels X or Y or Z among the results. As a result, we would need to filter out, from the result of the query, any data that does not match any filters.

Current Workaround

Proposed Solution

Additional Information

If the feature request is approved, would you be willing to submit a PR?

Yes / No (Help can be provided if you need assistance submitting a PR)