Webhook Customization

The current webhooks that Hospitable supports are very basic. I'm okay with this for generic use cases. But there are some cases where we need to customize a bit on the call itself. And it's very easy to implement on your side. Please look at how Zapier has done that. All you need is to allow us to define the method, a payload, if any, and custom headers. All you would do is build that HTTP request with all these optional metadata and make the call out on an event. It doesn't even need to be as full-fledged as APIs. You could make all of these optional fields, keep the current way of doing things, but if somebody sets anything on the optional capabilities, then use that. I think the basic authentication and the headers are more important to me right now than anything else because I am unable to call Grok bots based on some webhooks that I want. Please implement this. It's very trivial to make this change.