Move Spree::OrderUpdater to OrderManagement engine

app/models/spree/order_decorator.rb

@@ -90,7 +90,7 @@ Spree::Order.class_eval do
   }
 
   def updater
-    @updater ||= Spree::OrderUpdater.new(self)
+    @updater ||= OrderManagement::Order::Updater.new(self)
   end
 
   def create_proposed_shipments

engines/order_management/app/services/order_management/order/updater.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
-module Spree
-  class OrderUpdater
+module OrderManagement::Order
+  class Updater
     attr_reader :order
     delegate :payments, :line_items, :adjustments, :shipments, :update_hooks, to: :order
 

engines/order_management/spec/services/order_management/order/updater_spec.rb

@@ -2,10 +2,10 @@
 
 require 'spec_helper'
 
-module Spree
-  describe OrderUpdater do
+module OrderManagement::Order
+  describe Updater do
     let(:order) { build(:order) }
-    let(:updater) { Spree::OrderUpdater.new(order) }
+    let(:updater) { OrderManagement::Order::Updater.new(order) }
 
     before { allow(order).to receive(:backordered?) { false } }