Windows Privileges - moved util code to it's own C# util (#48897)

* Windows Privileges - moved util code to it's own C# util

* Rename Enabler class to PrivilegeEnabler to remove ambiguity

* rename Utils to PrivilegeUtil

* fix missing util name changes

test/integration/targets/win_csharp_utils/tasks/main.yml

@@ -44,3 +44,12 @@
   assert:
     that:
     - ansible_process_tests.data == "success"
+
+- name: test Ansible.Privilege.cs
+  ansible_privilege_tests:
+  register: ansible_privilege_test
+
+- name: assert test Ansible.Privilege.cs
+  assert:
+    that:
+    - ansible_privilege_test.data == "success"