Add users insert to users.sql

sql/users.sql

@@ -4,4 +4,8 @@ CREATE TABLE users(
     password VARCHAR(32) NOT NULL,
     is_admin TINYINT(1) DEFAULT 0,
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
-);
+);
+
+INSERT INTO users(username, password, is_admin) VALUES
+    ('admin', 'password', 1),
+    ('joakim', 'ErEnIdiot', 0);