Add privacy extra settings page

app/controllers/settings/privacy_extra_controller.rb

@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+class Settings::PrivacyExtraController < Settings::BaseController
+  before_action :set_account
+
+  def show; end
+
+  def update
+    if UpdateAccountService.new.call(@account, account_params.except(:settings))
+      current_user.update!(settings_attributes: account_params[:settings])
+      ActivityPub::UpdateDistributionWorker.perform_async(@account.id)
+      redirect_to settings_privacy_extra_path, notice: I18n.t('generic.changes_saved_msg')
+    else
+      render :show
+    end
+  end
+
+  private
+
+  def account_params
+    params.require(:account).permit(settings: UserSettings.keys)
+  end
+
+  def set_account
+    @account = current_account
+  end
+end