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/migrations/000001_create_tables.down.sql

@@ -0,0 +1,4 @@
+DROP TABLE game;
+DROP TABLE song;
+DROP TABLE song_list;
+DROP TABLE vgmq;

db/migrations/000001_create_tables.up.sql

@@ -0,0 +1,43 @@
+CREATE TABLE game (
+	id serial4 NOT NULL,
+	game_name varchar NOT NULL,
+	added timestamp NOT NULL,
+	deleted timestamp NULL,
+	last_changed timestamp NULL,
+	"path" varchar NOT NULL,
+	times_played int4 DEFAULT 0 NULL,
+	last_played timestamp NULL,
+	number_of_songs int4 NULL,
+	hash varchar NULL,
+	CONSTRAINT game_pkey PRIMARY KEY (id)
+);
+
+CREATE TABLE song (
+	game_id int4 NOT NULL,
+	song_name varchar NOT NULL,
+	"path" varchar NOT NULL,
+	times_played int4 DEFAULT 0 NULL,
+	hash varchar NULL,
+	file_name varchar NULL,
+	CONSTRAINT song_pkey PRIMARY KEY (game_id, path)
+);
+
+CREATE TABLE vgmq (
+	song_no int4 NOT NULL,
+	"path" varchar(50) NULL,
+	clue varchar(200) NULL,
+	answered bool DEFAULT false NOT NULL,
+	answer varchar(50) NULL,
+	CONSTRAINT vgmq_pk PRIMARY KEY (song_no)
+);
+CREATE UNIQUE INDEX vgmq_song_no_uindex ON vgmq USING btree (song_no);
+
+CREATE TABLE song_list (
+	match_date date NOT NULL,
+	match_id int4 NOT NULL,
+	song_no int4 NOT NULL,
+	game_name varchar(50) NULL,
+	song_name varchar(50) NULL,
+	CONSTRAINT song_list_pkey PRIMARY KEY (match_date, match_id, song_no)
+);
+CREATE INDEX song_list_game_name_idx ON song_list USING btree (game_name);

db/migrations/000002_adjust_fields_for_sqlc.down.sql

@@ -0,0 +1,3 @@
+Alter table game
+alter column number_of_songs set null,
+alter column hash set null;

db/migrations/000002_adjust_fields_for_sqlc.up.sql

@@ -0,0 +1,19 @@
+BEGIN;
+UPDATE game
+SET number_of_songs = 0
+WHERE number_of_songs IS NULL;
+UPDATE game
+SET hash = ''
+WHERE hash IS NULL;
+UPDATE song
+SET hash = ''
+WHERE hash IS NULL;
+COMMIT;
+BEGIN;
+Alter table game
+alter column number_of_songs set not null,
+alter column number_of_songs set default 0,
+ALTER COLUMN hash SET NOT NULL;
+ALTER TABLE song
+ALTER COLUMN hash SET NOT NULL;
+COMMIT;