Further work on leaderboards

- Modularize tests
- Add migrations
- Fix switch case so it actually breaks
- Add in missing writes
- Beginning work on custom migration to move the leaderboard to the final state

dDatabase/MigrationRunner.h

@@ -10,4 +10,5 @@ struct Migration {
 namespace MigrationRunner {
 	void RunMigrations();
 	void RunSQLiteMigrations();
+	void MigrateLeaderboard();
 };