Localisation of date picker

Good afternoon,

I am adding language option to a page and need to have the datepicker localised.

I have found this: https://editor.datatables.net/examples/dates/i18n.html

Adding i18n data to each table is a bit annoying and I would like to have something I can configure at least per page.

I have tryied to configure each field like this:

{
                    label: "Date de naiss.",
                        name: "child.birth_date",
                        type:   'datetime',
                        format: 'YYYY-MM-DD',
                        opts: {
                            momentLocale: 'fr'
                        }

                }

But I did not mange to make it work. How could I do it?

Thanks,
Fabio