[M120 Migration][VD] Support search wrap around within the page

[M120 Migration][VD] Support search wrap around within the page

1. Support search wrap around within the page
Add "wrap_around" properties on FindOptionsPtr, default value is false.
App can pass "EWK_FIND_OPTIONS_WRAP_AROUND" option when calling
"ewk_view_text_find" api,
to search wrap around within the page.

2. Fix search wrap around issue when set wrap around false
As "new_session" properties signifies whether this operation is the
first request or a follow-up; for find next operation, set new_session
is false, or else will cause search wrap around issue when set wrap
around false.

refer:
https://review.tizen.org/gerrit/#/c/291844/

Change-Id: Id5620fd3b6f8bff92fe608f24eaf36a693835692
Signed-off-by: fang fengrong <fr.fang@samsung.com>