Treat webhooks as any other event

Right now, using webhooks in HA has some serious limitations:

  1. It’s hard to debug them, as the content of incoming webhook calls is not shown anywhere in HA.
  2. It is only possible to use one webhook with one automation

It would be great if webhooks would work just like any other event, Developer Tools->Events page could be used to debug them and the configuration could reference them as many times as needed.