Support Emoji sequences

This is a common solution that handles emoji sequences:
  :: text presentation sequence and selector
  :: emoji presentation sequence and selector
  :: emoji modifier sequence like skin tone
  :: emoji keycap sequence
  :: emoji flag sequence
  :: emoji tag sequence like England flag
  :: more cases in emoji zwj sequence like Rainbow Flag

This patch handle display cases.
The editing cases will be handled in another patch.

This patch depends on the dali-adaptor patch:
https://review.tizen.org/gerrit/c/platform/core/uifw/dali-adaptor/+/266046

Change-Id: I1bc7aed8a73b1d396019b2ef0a7fab5ea187d39f