Support api.eu.intercom.io

[punkle]

Version info

• intercom-node version: 2.11.2
• Node version: 14.17.3

Expected behavior

Ability to pass the base url for the api client as api.eu.intercom.io

Actual behavior

It may already by possible but I am not sure how.

Steps to reproduce

N/A

Logs

N/A

[SeanHealy33]

@punkle Howdy!

All newly generated api tokens come with some region based information in the EU. If you use them to query api.intercom.io they will automatically proxy requests to the EU api.

api.eu.intercom.io still works though so I think it still makes sense to put your pr in :)