feat: date_format(datetime, format) to format a timestamp/date/datetime value

[killme2008]

What problem does the new feature solve?

We need a function date_format to format a timestamp, date or datetime value into a string value.

For example:

select date_format(now(), ,'%Y-%m-%d %T.%000');

What does the feature do?

Format a format a timestamp/date/datetime value into string.

Implementation challenges

No response

[waynexia]

related to apache/datafusion#5398