Migrate from CloudFormation to Terraform

[blackmichael]

Description

CloudFormation is fine but the lack of comprehensive documentation makes it very difficult to learn and do new things with, hampering any sort of infrastructure development efforts. Terraform is better for these reasons, and there's appeal behind the popularity across the industry with it.

Expectations

Replace the existing CF files with Terraform files (perhaps an /infra folder would be good here), achieving "infrastructure parity" with what currently exists. There are more AWS resources that are not currently captured by CF, but migrating what currently exists now will make it easier to port those existing "untracked" resources over