```python
The [`WebhooksServer`] class lets you create an instance of a Gradio app that can receive Huggingface webhooks.
These webhooks can be registered using the [`~WebhooksServer.add_webhook`] decorator. Webhook endpoints are added to
the app as a POST endpoint to the FastAPI router. Once all the webhooks are registered, the `launch` method has to be
called to start the app.