CEC-4640: add bulk add to fleet (#384)

* refactor bulkactions component

* refactor bulk actions

* update dom tests

* add addToFleet hook

* make signal optional

* implement code splitting

* add deps

* remove test label

src/setupTests.js

@@ -3,3 +3,7 @@
 // expect(element).toHaveTextContent(/react/i)
 // learn more: https://github.com/testing-library/jest-dom
 import "@testing-library/jest-dom";
+
+if (typeof window.URL.createObjectURL === 'undefined') {
+  window.URL.createObjectURL = jest.fn();
+}