feat: Allow to limit multiple question type

[susnux]

• Resolves: https://github.com/nextcloud/forms/issues/616

This allows to set a minimum and maximum of options that can or must be selected. E.g. you can enforce max. 3 options to be selected.

Other changes needed:

1. Add custom validation
2. Add validation of extra settings parameter types

Screenshots

settings	error

[susnux]

@jancborchardt I am not sure about using the note card for validation / showing the error. What do you think?

[Chartman123]

@jancborchardt I am not sure about using the note card for validation / showing the error. What do you think?

I think it looks nice and we could also use this for the other questions :)

[Chartman123]

Could you please add some documentation here? https://github.com/nextcloud/forms/blob/main/docs/DataStructure.md#extra-settings

[susnux]

And as I stated in the other comment we should add the new extraSettings to the docs. And we should make sure that the min number can't be bigger than the max number. :)

Both fixed and also added a test for the options :)

[susnux]

Could you do another rebase so that we also have a Codecov update here?

:wink:

[Chartman123]

Yes but last time I did that something regarding the signing went wrong 🙈

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 45.02%. Comparing base (82189a5) to head (b7404cc).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #2080 +/- ## ============================================ + Coverage 44.76% 45.02% +0.26% - Complexity 710 720 +10 ============================================ Files 61 61 Lines 2761 2776 +15 ============================================ + Hits 1236 1250 +14 - Misses 1525 1526 +1 ```