Add ReviewRequest and ReviewMessage

db/migrate/20220721132939_create_review_messages.rb

@@ -0,0 +1,12 @@
+class CreateReviewMessages < ActiveRecord::Migration[7.0]
+  def change
+    create_table :review_messages do |t|
+      t.string :feedback_type
+      t.string :content
+      t.references :question, null: false, foreign_key: true
+      t.references :user, null: false, foreign_key: true
+
+      t.timestamps
+    end
+  end
+end