[Feature]: Create robust GDPR/COPPA processing system

[jonbarrow]

Right now GDPR requests and COPPA removals are processed manually through requests on the forum. This is fine for our current volume, but it's not ideal in the long run and it means that if anything happens to the limited number of people who can process these issues (for security reasons not everyone on the team can) then we would no longer be able to be compliant.

Simply adding a "delete account" button on the website is not sufficient in this case, as we have MANY servers now which all need to be able to consume these requests and react accordingly. GDPR also extends further than just data removal. A robust GDPR request processing system also needs to account for data modifications and requests for user data.

See the following issues for details:

• Data deletions: [Feature]: GDPR/COPPA (deletion) #6
• Data retrievals: [Feature]: GDPR/COPPA (retrieval) #7