Add new Spain content rating ERI

Add the content rating ERI to Spain list used in some providers and channels as Specially Recommended for Toddlers.

Emby.Server.Implementations/Localization/Ratings/es.csv

@@ -3,6 +3,7 @@ A/fig,0
 A/i,0
 A/fig/i,0
 APTA,0
+ERI,0
 TP,0
 0+,0
 6+,6