Add user requirement setting to privacy settings

app/controllers/settings/privacy_controller.rb

@@ -9,7 +9,8 @@ class Settings::PrivacyController < ApplicationController
     user_attributes = params.require(:user).permit(:privacy_allow_anonymous_questions,
                                                    :privacy_allow_public_timeline,
                                                    :privacy_allow_stranger_answers,
-                                                   :privacy_show_in_search)
+                                                   :privacy_show_in_search,
+                                                   :privacy_require_user)
     if current_user.update(user_attributes)
       flash[:success] = t(".success")
     else

app/views/settings/privacy/edit.html.haml

@@ -2,6 +2,7 @@
   .card-body
     = bootstrap_form_for(current_user, url: settings_privacy_path, method: :patch, data: { turbo: false }) do |f|
       = f.check_box :privacy_allow_anonymous_questions
+      = f.check_box :privacy_require_user
       = f.check_box :privacy_allow_public_timeline
       = f.check_box :privacy_allow_stranger_answers