safari_cb_affinity directive support

[slavaleleka]

example 1

!#safari_cb_affinity(all)
!+ NOT_OPTIMIZED PLATFORM(ios, ext_android_cb)
@@||7plus.com.au^$generichide
!#safari_cb_affinity

example 2

!#safari_cb_affinity(general,privacy)
@@||mc.yandex.ru/metrika/tag.js?img_adv=123$domain=kinopoisk.ru
!#safari_cb_affinity