Remove drf-addons dependency.

### Describe the feature you'd like

We need to remove [drf-addons](https://github.com/101Loop/drf-addons) dependency from this project as we're only using it's minor features only.

We will rewrite these 2 methods:
- get_client_ip
- send_message

And we'll remove usage of `JsonResponse`. Use DRF's `Response` or something.

Please write tests. 🙏🏼
### Is your feature request related to a problem?

### Your Environment

- `drf-user` version(s) (`drf-user --version`:
- Operating System(s):
- Python version(s):

### Additional context