Chore: Housekeeping tasks (#721)

- End point to return api version
- Move agent bot listener to sync dispatcher
- gem update

config/application.rb

@@ -30,5 +30,12 @@ module Chatwoot
     config.action_dispatch.default_headers = {
       'X-Frame-Options' => 'ALLOWALL'
     }
+
+    # Custom chatwoot configurations
+    config.x = config_for(:app).with_indifferent_access
+  end
+
+  def self.config
+    @config ||= Rails.configuration.x
   end
 end