RU: Transfer Kinescope video hosting CDN to entertainment (#3879)

* category-ru: Transfer Kinescope video hosting CDN to entertainment-ru

* category-entertainment-ru: Add Kinescope video hosting CDN

data/category-ru

@@ -90,7 +90,6 @@ apptrackpets.com   # Pet GPS tracker service (Yandex Cloud, reg.ru)
 flomni.com         # Omnichannel communications platform
 foto-planeta.com   # Photo encyclopedia of settlements
 gazfond-pn.ru      # Non-state pension fund GAZFOND pension savings
-kinescopecdn.net   # Kinescope video hosting CDN
 litres.ru          # E-book and audiobook service
 meteoinfo.ru       # Hydrometeorological Center of Russia
 ngenix.net         # NGENIX is a Russian provider of acceleration and security services for public web resources