Added Date ParamType

[enricobarzetti]

Fixes #1655 by adding a date parameter type

Related links:
#44
#423
#603
#1093
#1099
https://github.com/click-contrib/click-datetime

Checklist:

• Add tests that demonstrate the correct behavior of the change. Tests should fail without the change.
• Add or update relevant docs, in the docs folder and in code.
• Add an entry in CHANGES.rst summarizing the change and linking to the issue.
• Add .. versionchanged:: entries in any relevant code docs.
• Run pre-commit hooks and fix any issues.
• Run pytest and tox, no tests failed.

[davidism]

Thank you for looking at this. However, see #1655 for rejection reason.