add access tokens

db/migrate/20230806140534_create_access_tokens.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+class CreateAccessTokens < ActiveRecord::Migration[7.0]
+  def change
+    create_table :access_tokens do |t|
+      t.references :user, null: false, foreign_key: true, index: true
+      t.text :token, null: false
+      t.text :sha256, null: false, index: { unique: true }
+
+      t.timestamps
+    end
+  end
+end