[76803] Event to ICS Support

[mrashed-dev]

Description

This PR enables support for generating an ICS file from an Event.

Usage

Nylas.config({clientId: 'clientId', clientSecret: 'clientSecret'});
const nylas = Nylas.with('access_token');

const exampleEvent = await nylas.events.find('{id}');

// Generate an ICS from an event
let ics = await exampleEvent.generateICS();

// You can also pass ICS Options for more configuration
ics = await exampleEvent.generateICS({
  iCalUID="test_uuid",
  method="add",
  prodId="test_prodid"
})

License

I confirm that this contribution is made under the terms of the MIT license and that I have the authority necessary to make this contribution on behalf of its copyright owner.

[shortcut-integration]

This pull request has been linked to Shortcut Story #76803: Event to ICS support.