text: Title: [BUG] Reverse url names are not auto generated
  Body: **Describe the bug**
  Reverse resolution of urls described on https://django-ninja.rest-framework.com/tutorial/urls/ does not work for me. By inspecting the generated resolver, I discovered, that views that do not explicitly specify `url_name` do not have a name generated at all. View function name is not used.
  
  **Versions (please complete the following information):**
   - Python version: 3.8
   - Django version: 3.2
   - Django-Ninja version: 0.17.0
  