update applications service with EE audit

app/services/applications/create_service.rb

 module Applications
-  class CreateService < ::Emails::BaseService
-    #prepend ::EE::Applications::CreateService
+  class CreateService
+    prepend ::EE::Applications::CreateService
 
     def initialize(current_user, params)
       @current_user = current_user

ee/app/services/ee/applications/create_service.rb

+module EE
+  module Applications
+    module CreateService
+      def execute
+        super.tap do |application|
+          ::AuditEventService.new(@current_user,
+                                  @current_user,
+                                  action: :custom,
+                                  custom_message: 'OAuth access granted',
+                                  ip_address: @ip_address)
+              .for_user(application.name).security_event
+        end
+      end
+    end
+  end
+end

spec/services/applications/create_service_spec.rb

@@ -9,4 +9,10 @@ describe ::Applications::CreateService do
   it 'creates an application' do
     expect { subject.execute }.to change { Doorkeeper::Application.count }.by(1)
   end
+
+  it 'creates an audit log' do
+    stub_licensed_features(extended_audit_events: true)
+
+    expect { subject.execute }.to change { SecurityEvent.count }.by(1)
+  end
 end