feat: add judoscaler gem for heroku autoscaling (#10419)

- add judoscaler gem to allow judoscale use in heroku environments
- This will allow auto scaling for both web and worker dynos across both
standard-1x/2x and performance dynos
- This will scaling in response to queue time rather than response
time(heroku default)
- This also allows you to scale multiple dynos in and out at once,
rather than scaling them one at a time, as is the default.

Ref
----
1. https://judoscale.com/
2. https://devcenter.heroku.com/articles/judoscale

config/application.rb

@@ -27,6 +27,12 @@ if ENV.fetch('SENTRY_DSN', false).present?
   require 'sentry-sidekiq'
 end
 
+# heroku autoscaling
+if ENV.fetch('JUDOSCALE_URL', false).present?
+  require 'judoscale-rails'
+  require 'judoscale-sidekiq'
+end
+
 module Chatwoot
   class Application < Rails::Application
     # Initialize configuration defaults for originally generated Rails version.