user and session generated

db/migrate/20210320130542_create_users.rb

@@ -0,0 +1,10 @@
+class CreateUsers < ActiveRecord::Migration[6.1]
+  def change
+    create_table :users do |t|
+      t.string :username
+      t.string :password_digest
+
+      t.timestamps
+    end
+  end
+end