feat(date-timer): Refactor Countdown as DateTimer

[mucahit]

Details

Countdown component has been repurposed as DateTimer, now it gets range: Date[] prop and countdowns to the greater date from the origin date.

The other use case is Countup functionality, if you pass timerType="up", DateTimer will expect a date greater than today so that it can count up to that date.

• range prop could be unordered, it will be handled by calculateRemainingTimeBreakdown
  • If there are more than 1 dates passed in the range prop, calculateRemainingTimeBreakdown will assign the greater date to targetDate

This is a Breaking change