update files, bring to latest code

src/schemas/database.py

@@ -9,7 +9,7 @@ signature TEXT NOT NULL,
 isbn TEXT NOT NULL,
 ppn TEXT NOT NULL,
 title TEXT NOT NULL,
-link TEXT NOT NULL,);
+link TEXT NOT NULL);
 """
 
 LOANS = """CREATE TABLE IF NOT EXISTS loans (
@@ -19,6 +19,7 @@ media_id INTEGER NOT NULL,
 loan_date TEXT NOT NULL,
 return_date TEXT NOT NULL,
 returned INTEGER DEFAULT 0,
+returned_date TEXT,
 FOREIGN KEY (user_id) REFERENCES users(id),
 FOREIGN KEY (media_id) REFERENCES media(id));
 """