[NUI] Add ActionForward event for Accessibility (#4451)
- In Accessibility, One finger double tap and hold gesture is to pass
the event to the application.
- For the application, it can get the signal using
ActionForward event.
- Dependencies :
https://review.tizen.org/gerrit/#/c/platform/core/uifw/dali-adaptor/+/278951/
https://review.tizen.org/gerrit/#/c/platform/core/uifw/dali-toolkit/+/278952/
https://review.tizen.org/gerrit/#/c/platform/core/uifw/dali-csharp-binder/+/278953/
Signed-off-by: Seoyeon Kim <seoyeon2.kim@samsung.com>
Signed-off-by: Seoyeon Kim <seoyeon2.kim@samsung.com>