Types for V3 webhooks

[KazimirPodolski]

Is your feature request related to a problem? Please describe.
V2 had webhooks types like WebhookNotification and whatnot.

Describe the solution you'd like
It makes sense to have them in V3 API (V7 SDK).

[juan-talin]

Yeah I'd need a bump on this please. Really thought that V3 SDK would have V2 parity.

[AaronDDM]

Sorry for the delay, I shall take a look at this. I am assuming however this is related to Webhook Triggers not being exported.

[juan-talin]

Yep - that'd be great.