[PUI] Session authentication (#6970)

* Adjust backend cookie settings

* Allow CORS requests to /accounts/

* Refactor frontend code

- Remove API token functions
- Simplify cookie approach
- Add isLoggedIn method

* Adjust REST_AUTH settings

* Cleanup auth functions in auth.tsx

* Adjust CSRF_COOKIE_SAMESITE value

* Fix login request

* Prevent session auth on login view

- Existing (invalid) session token causes 403

* Refactor ApiImage

- Point to the right host
- Simplify code
- Now we use session cookies, so it *Just Works*

* Fix download for attachment table

- Now works with remote host

* Cleanup settings.py

* Refactor login / logout notifications

* Update API version

* Update src/frontend/src/components/items/AttachmentLink.tsx

Co-authored-by: Lukas <76838159+wolflu05@users.noreply.github.com>

* fix assert url

* Remove comment

* Add explicit page to logout user

* Change tests to first logout

* Prune dead code

* Adjust tests

* Cleanup

* Direct to login view

* Trying something

* Update CUI test

* Fix basic tests

* Refactoring

* Fix basic checks

* Fix for PUI command tests

* More test updates

* Add speciifc test for quick login

* More cleanup of playwright tests

* Add some missing icons

* Fix typo

* Ignore coverage report for playwright test

* Remove coveralls upload task

---------

Co-authored-by: Lukas <76838159+wolflu05@users.noreply.github.com>
Co-authored-by: Matthias Mair <code@mjmair.com>

src/backend/InvenTree/users/models.py

@@ -56,6 +56,17 @@ def default_token_expiry():
     return InvenTree.helpers.current_date() + datetime.timedelta(days=365)
 
 
+def default_create_token(token_model, user, serializer):
+    """Generate a default value for the token."""
+    token = token_model.objects.filter(user=user, name='', revoked=False)
+
+    if token.exists():
+        return token.first()
+
+    else:
+        return token_model.objects.create(user=user, name='')
+
+
 class ApiToken(AuthToken, InvenTree.models.MetadataMixin):
     """Extends the default token model provided by djangorestframework.authtoken.