FreeBSD AMI ID pages

In 2021 I started publishing FreeBSD AMI IDs in the SSM Parameter Store ; this made it much easier for scripts to launch EC2 instances without needing to have hard-coded AMI IDs. (Indeed, I use this extensively in my regression testing, to launch e.g. the most recent 14.4-STABLE image.) While this is useful for scripts, it's not so useful for humans.