Adds Anime-specific searching and Fanzub support

Splits searching in the same way as a Daily search, each indexer has a
method to search specifically for anime. Fanzub support was also added,
with its own indexer and parser classes.

src/NzbDrone.Core/IndexerSearch/Definitions/AnimeEpisodeSearchCriteria.cs

@@ -0,0 +1,14 @@
+using System;
+
+namespace NzbDrone.Core.IndexerSearch.Definitions
+{
+    public class AnimeEpisodeSearchCriteria : SearchCriteriaBase
+    {
+        public int AbsoluteEpisodeNumber { get; set; }
+
+        public override string ToString()
+        {
+            return string.Format("[{0} : {1:00}]", SceneTitle, AbsoluteEpisodeNumber);
+        }
+    }
+}