Add ReviewRequest and ReviewMessage

app/models/review_request.rb

@@ -0,0 +1,25 @@
+# == Schema Information
+#
+# Table name: review_requests
+#
+#  id          :bigint           not null, primary key
+#  answered    :string
+#  created_at  :datetime         not null
+#  updated_at  :datetime         not null
+#  question_id :bigint           not null
+#  user_id     :bigint           not null
+#
+# Indexes
+#
+#  index_review_requests_on_question_id  (question_id)
+#  index_review_requests_on_user_id      (user_id)
+#
+# Foreign Keys
+#
+#  fk_rails_...  (question_id => questions.id)
+#  fk_rails_...  (user_id => users.id)
+#
+class ReviewRequest < ApplicationRecord
+  belongs_to :question
+  belongs_to :user
+end