ICS file support in the Zoom to HubSpot integration

We have chosen to send all email wrt a Zoom Webinar from HubSpot, not from Zoom. This gives us maximum control over the look and feel, and also measure open/click rates in the email.

The only (and important) feature we are now missing out on is attaching an .ICS file in the webinar confirmation email. As each webinar registrant has a unique link, we cannot create the .ICS file ourselves and attach it to the automated confirmation email.