Adds spec for EE project integrations

This change adds a spec for EE project integrations
(Currently Github)

ee/spec/features/projects/integrations/project_integrations_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'Project integrations', :js do
+  include_context 'project integration activation'
+  it_behaves_like 'integration settings form' do
+    let(:integrations) { [Integrations::Github.new] }
+
+    before do
+      stub_licensed_features(github_project_service_integration: true)
+    end
+
+    def navigate_to_integration(integration)
+      visit_project_integration(integration.title)
+    end
+  end
+end