Support RRULE standard

[leog]

It would be awesome if this plugin could support RRULE standard to be able to pass down the RRULE string and operate with the correspondent generated recurring events.

For example:

// Create a recurrence using today as the start date.
const recurrence = dayjs().recur("FREQ=DAILY;INTERVAL=2;COUNT=4");
// Or
const recurrence = dayjs().recur({
  freq: "DAILY",
  interval: 2,
  count: 4
});
// Outputs: ["2022-10-21T13:50:00.000Z", "2022-10-23T13:50:00.000Z", "2022-10-25T13:50:00.000Z", "2022-10-27T13:50:00.000Z"]
const allDates = recurrence.all();