Integromat support

Add support for integration via Integromat, including instant triggers.

It looks like they do provide support now, however they have not built out anything for instant triggers, but it sounds like we could set it up ourselves. I was looking into Integromat because the pricing seemed much more cost effective than Zapier. This is the response I got from Integromat Support:

Unfortunately, we don´t have a support for webhooks for Knack service. We have it on our todo list and we plan to update our Knack package and add webhooks. But I don´t have an ETA when it might happen. Anyway, you can create your own webhook: