[M108 Migration] Bring up Selection Controller

[M108 Migration] Bring up Selection Controller

1. Adjusting selection handle's coordinates to current
orientation for mouse move and other changes.
2. Selected Text shouldn't be removed when H/W back button is pressed.
3. Adding ewk_settings_extra_feature_(set|get).
4. Use LongPressStarted as a reason of selection change after long press.

References:
https://review.tizen.org/gerrit/281503
https://review.tizen.org/gerrit/283776

Change-Id: I865c46a8044cd430bd9d6a982f935e2724594da6
Signed-off-by: v-saha <v.saha@samsung.com>