add "support' related meta data to the kurtosis.yml so that it can be displayed in enclave manager

[h4ck3rk3y]

Background & motivation

increasingly we are having support requests on packages that aren't central to kurtosis-cli; where we normally redirect people to certain discrods the idea is to support some more metadata in the kutosis.yml for this

Desired behaviour

name: github.com/kurtosis-tech/hyperlane-package
description: Deploy a chain on hyperlane
support:
discord: <>

support allows one of (discord, slack, email,) but just discord to begin with and it creates a button somewhere in the enclave manager

How important is this to you?

Painful; the lack of this feature makes using Kurtosis frictionful.

What area of the product does this pertain to?

Frontend: the Graphical User Interface, including the Enclave Manager