Add new API for handling privacy privileges during application launch

Add new API for handling privacy privileges during application launch

New public function security_manager_prepare_app_privacy() to be called
by launcher. It will check application policy, generate pop-up if necessary,\
wait for user answer, modify policy accordingly and trigger toast message
if application launch has been prohibited.
The caller (launcher) should abort application launching if this function
returns an error.

Change-Id: Ia4b901cc409ccd8d695da8b53a0223bdb54c0cde
Signed-off-by: Rafal Krypa <r.krypa@samsung.com>