Is your feature request related to a problem? Please describe.
Add ability to limit the date input values to either the minimum or maximum date allowed for a given use case e.g.

1. A task should not start before a certain date
2. When adding DOB, the DOB should be less than the current day/today
3. When scheduling you can validate when a given task should be done or assigned to a given practitioner

Describe the solution you'd like

1. To be able to resolve expressions such as today() in the min-max value extension
2. To use the min-max value extension in the actual date picker pop-up. at the moment the pop-up dialogue allows the user to put in any date and the error message only kicked in once the user has input a date.

Describe alternatives you've considered

1. It would be much better if the date picker already doesn't allow the user to input a date outside the allowed range.

Additional context
A detailed use case is defined on this ticket opensrp/fhircore#845 on OpenSRP FHIR Core repo

Would you like to work on the issue?
@RaaziaTarique