DateValidators problem with beforeDate, notBeforeDate, afterDate and notAfterDate

[magnasilvar]

🐞 Bug report

When using a third party library like ngx-bootstrap/datepicker :

• time part is set to 00.00.00 when setting manually (keyboard).
• time part is set to local time when using third component.

So, use case we only want date part to be compare (and not time part) can raise a bugged behaviour.

How repair it

• Add 4 new validators : beforeDateTime, notBeforeDateTime, afterDateTime and notAfterDateTime.
• Update beforeDate, notBeforeDate, afterDate and notAfterDate to compare only date part. That will lead to ⚠️ BREAKING CHANGES ⚠️ for people who used these validators for datetime.
• Add "datetime" keyword to package.json

Tip - Use DateFormatter.toFakeSerializedDate