Fix for category-media-ru and category-media-ru-blocked (#3486)

* Rename category-media-ru into category-media-ru-blocked

The list was built based on a Wikipedia source listing media sites
blocked in Russia:
https://ru.wikipedia.org/wiki/Список_заблокированных_в_России_СМИ

The original name is misleading.

* category-media-ru-blocked: add comments

* Create category-media-ru

This list contains media sites in Russia

data/category-ru

@@ -7,6 +7,7 @@ include:category-betting-ru
 include:category-ecommerce-ru
 include:category-entertainment-ru
 include:category-gov-ru
+include:category-media-ru
 include:category-medicine-ru
 include:category-retail-ru
 include:category-travel-ru
@@ -51,13 +52,6 @@ nspk.ru
 netmonet.co
 tips.tips
 
-# Media
-# NOT include category-media-ru, it's for media blocked in Russia now.
-russiatoday.com
-rteam.tech   # IT company owned by RT's parent org (ANO TV-Novosti)
-shop-rt.com  # RT merchandise store
-swentr.site  # RT mirror domain
-
 # Telecom operators
 beeline.ru
 dom.ru