Add support for "ref" parameter to app install link

[xatxat (Simon Kusterer @ Gorilla Apps)]

It would be nice if we could add an optional “ref” parameter to the install/share link of an app. Example:

https://auth.monday.com/oauth2/authorize?client_id=123&response_type=install&ref=PARTNER123

The value of the “ref” parameter could then be part of the payload of the “install” app lifecycle event:

{
  "type": "install",
  "data": {
    "app_id": 1000000000,
    "app_name": "Test App",
    "ref": "PARTNER123",
     ....other data
  }
}

With this in place, we would be able to spin up an affiliate program, or do other kinds of trackings.

– Simon (Gorilla Apps)