Spanish translation for "Politique de Confidentialité"

[JMLX42]

The "Política de privacidad" page is just a placeholder:

https://github.com/promethe42/cocorico/blob/master/api/db/pages/privacy-policy.html

We need to fix it by translating/adapting the content of:

https://github.com/promethe42/cocorico/blob/master/api/db/pages/politica-de-privacidad.md

Documentation about how to translate pages is here:

https://github.com/promethe42/cocorico/blob/master/doc/Localization.md#translating-pages

Does it make sense to keep the FranceConnect stuff in the Spanish version?
Should we go for a more generic "digital ID" thing?

[JMLX42]

@virgile-dev could you take care of this please?