missing import (#69)

Author: Sylvestre

lib/mysql.js

@@ -2,6 +2,7 @@ import JSONStream from "JSONStream";
 import {json} from "micro";
 import mysql, {createConnection} from "mysql2";
 import {failedCheck} from "./errors.js";
+import {notFound} from "./errors.js";
 
 const {Types, ConnectionConfig} = mysql;