Create Ionic 6 rrule edit modal dialog.

We need an Ionic 6 calendar rrule edit modal dialog component to take input values and generate the rrule rule string object value. The component should have similar GUI functions as the example: https://demo.mobiscroll.com/angular/agenda/recurring-events

The component should generate the rrule object matches the rrule data structure:
https://www.npmjs.com/package/rrule