Add new manga statuses

To be exposed in extension-lib 1.3

app/src/main/java/eu/kanade/tachiyomi/source/model/SManga.kt

@@ -56,6 +56,9 @@ interface SManga : Serializable {
         const val ONGOING = 1
         const val COMPLETED = 2
         const val LICENSED = 3
+        const val PUBLISHING_FINISHED = 4
+        const val CANCELLED = 5
+        const val ON_HIATUS = 6
 
         fun create(): SManga {
             return SMangaImpl()