Add admin MFA enforcement feature

app/controllers/application_controller.rb

@@ -14,6 +14,7 @@ class ApplicationController < ActionController::Base
   include DatabaseHelper
   include AuthorizedFetchHelper
   include SelfDestructHelper
+  include MfaForceConcern
 
   helper_method :current_account
   helper_method :current_session

app/helpers/flashes_helper.rb

@@ -2,6 +2,6 @@
 
 module FlashesHelper
   def user_facing_flashes
-    flash.to_hash.slice('alert', 'error', 'notice', 'success')
+    flash.to_hash.slice('alert', 'error', 'notice', 'success', 'warning')
   end
 end

spec/helpers/flashes_helper_spec.rb

@@ -10,6 +10,7 @@ RSpec.describe FlashesHelper do
       flash[:error] = 'an error'
       flash[:notice] = 'a notice'
       flash[:success] = 'a success'
+      flash[:warning] = 'a warning'
       flash[:not_user_facing] = 'a not user facing flash'
       # rubocop:enable Rails/I18nLocaleTexts
     end
@@ -19,7 +20,8 @@ RSpec.describe FlashesHelper do
         'alert' => 'an alert',
         'error' => 'an error',
         'notice' => 'a notice',
-        'success' => 'a success'
+        'success' => 'a success',
+        'warning' => 'a warning'
       )
     end
   end