Add modal controller to close Turbo Frame modals

app/controllers/modal_controller.rb

@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+class ModalController < ApplicationController
+  def close; end
+end

app/views/modal/close.html.haml

@@ -0,0 +1 @@
+= turbo_frame_tag :modal_container

config/routes.rb

@@ -171,5 +171,7 @@ Rails.application.routes.draw do
 
   get "/.well-known/change-password", to: redirect("/settings/account")
 
+  post "/modal/close", to: "modal#close", as: :modal_close
+
   puts "processing time of routes.rb: #{"#{(Time.zone.now - start).round(3).to_s.ljust(5, '0')}s".light_green}"
 end