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

Gemfile.lock

@@ -397,6 +397,13 @@ GEM
       hana (~> 1.3)
       regexp_parser (~> 2.0)
       uri_template (~> 0.7)
+    judoscale-rails (1.8.2)
+      judoscale-ruby (= 1.8.2)
+      railties
+    judoscale-ruby (1.8.2)
+    judoscale-sidekiq (1.8.2)
+      judoscale-ruby (= 1.8.2)
+      sidekiq (>= 5.0)
     jwt (2.8.1)
       base64
     kaminari (1.2.2)
@@ -891,6 +898,8 @@ DEPENDENCIES
   jbuilder
   json_refs
   json_schemer
+  judoscale-rails
+  judoscale-sidekiq
   jwt
   kaminari
   koala