Added a new sync that uses hash

Added a new sync that uses hash and sqlc for the queries. Added db
migration. Started adding a config file.

db/queries/song_list.sql

@@ -0,0 +1,9 @@
+-- name: InsertSongInList :exec
+INSERT INTO song_list (match_date, match_id, song_no, game_name, song_name)
+VALUES ($1, $2, $3, $4, $5);
+
+-- name: GetSongList :many
+SELECT *
+FROM song_list
+WHERE match_date = $1
+ORDER BY song_no DESC;