Return an entry's categories in display order

An entry's categories came back in whatever order SQLite found them. They're now ordered by position, the same order the library and the category list show.

data/src/main/sqldelight/tachiyomi/data/categories.sq

@@ -40,7 +40,8 @@ C.flags
 FROM categories C
 JOIN mangas_categories MC
 ON C._id = MC.category_id
-WHERE MC.manga_id = :mangaId;
+WHERE MC.manga_id = :mangaId
+ORDER BY C.sort;
 
 insert:
 INSERT INTO categories(name, sort, flags)