Delete ConvertKit Subscriber When User is Erased from WP

[kimcoleman]

Is your feature request related to a problem? Please describe.
When a user requests to be forgotten through the WP site, they remain active in ConvertKit. Right now we have to go manually delete them from CK.

Describe the solution you'd like
We should force delete the user from ConvertKit. There can be a filter to disable this. Or vice versa, must enable the filter to delete them. Or add a setting.

Describe alternatives you've considered
Manually deleting the subscriber from CK.