cost-optimization

Here are the steps to migrate a resource:

1. Pull latest changes from my refactor-migration-t1 branch.
2. Set the var SINGLE_RESOURCE_NAME in cmd/migrator/main.go to the resource filename.
3. Run go run cmd/migrator/main.go, the resource file would be edited and a new resource file will be created in internal/resources/aws
4. All things that the script was unable to migrate are chang

Describe the feature

currently the recommendation result is present on recommendation.status, we can also put it into target's annotation.
this feature should be an option in recommendation's spec.

May be similar to the EBS control checking for use of outdated GP2 volume types (https://github.com/turbot/steampipe-mod-aws-thrifty/blob/main/controls/ebs.sp#L50)