[M85 Migration][API] Implement EWK APIs for clipboard
This patch implements below internal EWK APIs for clipboard.
* ewk_settings_javascript_can_access_clipboard_{get,set}
- These APIs get/set the permission to access clipboard from javascript.
* ewk_settings_dom_paste_allowed_{get,set}
- These APIs get/set the permission for DOM paste.
Added also a unit tests for these APIs.
References:
https://review.tizen.org/gerrit/c/platform/framework/web/chromium-efl/+/220050
Change-Id: I60349ef902f15bb39cda0a3fb5608b4e477dd62b
Signed-off-by: yh106.jung <yh106.jung@samsung.com>