feat: Add user role column to users table

db/migrate/20240915000009_add_user_roles.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+ROM::SQL.migration do
+  change do
+    alter_table :users do
+      add_column :role, String, default: 'player'
+    end
+  end
+end