Support running campaigns on > 200 repositories

Created by: christinaforney

Customers who ran into issues with this:

• https://app.hubspot.com/contacts/2762526/contact/17877751
• https://app.hubspot.com/contacts/2762526/company/608245740

I couldn't find where we are tracking this functionality - perhaps it is implicit with the introduction of the CLI as the main way to create campaigns, but I'd like to ensure we're watching and addressing this.