DEV: Move more service code to core (#26613)

This is to enable :array type attributes for Contract
attributes in services, this is a followup to the move
of services from chat to core here:

cab178a405

Co-authored-by: Joffrey JAFFEUX <j.jaffeux@gmail.com>

config/initializers/100-active-support-type-extensions.rb

@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+Rails.application.config.to_prepare do
+  ActiveModel::Type.register(:array, ActiveSupportTypeExtensions::Array)
+end