Consume and extend 1.x Source API

TODO: make the rest of the app actually call the 1.x functions

app/src/main/java/eu/kanade/tachiyomi/data/database/models/Manga.kt

@@ -1,6 +1,7 @@
 package eu.kanade.tachiyomi.data.database.models
 
 import eu.kanade.tachiyomi.source.model.SManga
+import tachiyomi.source.model.MangaInfo
 
 interface Manga : SManga {
 
@@ -98,3 +99,16 @@ interface Manga : SManga {
         }
     }
 }
+
+fun Manga.toMangaInfo(): MangaInfo {
+    return MangaInfo(
+        artist = this.artist ?: "",
+        author = this.author ?: "",
+        cover = this.thumbnail_url ?: "",
+        description = this.description ?: "",
+        genres = this.getGenres() ?: emptyList(),
+        key = this.url,
+        status = this.status,
+        title = this.title
+    )
+}