🗃️ change db creation scripts

db/init.sql

@@ -2,8 +2,9 @@ CREATE DATABASE IF NOT EXISTS battleship;
 
 USE battleship;
 CREATE TABLE IF NOT EXISTS users (
-    pseudo VARCHAR(256),
+    id INT PRIMARY KEY AUTO_INCREMENT,
-    password VARCHAR(256)
+    pseudo VARCHAR(255) UNIQUE NOT NULL,
+    hashed_password VARCHAR(255) NOT NULL
 );
 
 CREATE USER 'root' IDENTIFIED WITH mysql_native_password BY 'rootpassword';