Sort artists by gallery count (#1059)

* Sort artists by number of galleries

* Sorted in DB query

app/src/main/kotlin/com/hippo/ehviewer/dao/DownloadsDao.kt

@@ -17,7 +17,7 @@ interface DownloadsDao {
     fun countByLabel(): Flow<Map<@MapColumn("LABEL") String?, @MapColumn("COUNT") Int>>
 
     @Suppress("ktlint:standard:annotation")
-    @Query("SELECT ARTIST, COUNT(*) AS COUNT FROM DOWNLOADS LEFT JOIN DOWNLOAD_ARTISTS USING(GID) GROUP BY ARTIST ORDER BY ARTIST")
+    @Query("SELECT ARTIST, COUNT(*) AS COUNT FROM DOWNLOADS LEFT JOIN DOWNLOAD_ARTISTS USING(GID) GROUP BY ARTIST ORDER BY COUNT DESC, ARTIST")
     fun countByArtist(): Flow<Map<@MapColumn("ARTIST") String?, @MapColumn("COUNT") Int>>
 
     @Query("SELECT * FROM DOWNLOADS ORDER BY TIME")