Support of Template-driven forms by date validators

[magnasilvar]

Relevant Package

This feature request is for @angular-stdlib/date.

Is your feature request related to a problem? Please describe.

Date validators (date, beforeDate, notBeforeDate, afterDate & notAfterDate) currently only support Reactive Forms.

Describe the solution you'd like

• Add public directives to support Template-driven forms
• Add keywords : directive, forms, reactive, template.
• Update README documentation.

Resource link :

• https://angular.io/api/core/Directive