Notify admins about campaigns that have low delivery rates

[ajohn25]

Is your feature request related to a problem? Please describe.
Currently, admins must navigate to the Campaign Stats page to understand the delivery status of messages they've sent.

Describe the solution you'd like
A status bubble on the campaign list item that represents how the campaign is performing with respect to deliverability (good, medium, bad)

Describe alternatives you've considered
Email to particular admins?
A new page to track overall and specific campaign deliverability?

[ajohn25]

@politics-rewired/spoke-client + @kennyycheng just wanted to get this issue created, but personally i'm not really sure what the right solution is, so definitely looking for feedback + ideas!