AWS: Implement IAM connections

[xescugc]

On AWS we only support basic networking connections, but there are also IAM connections, we need to also implement them as they give access (link) resources.

And add associated elements: S3 buckets, access to specific AWS services, etc.

[DavidHaasz]

Any update on this issue as once this is solved this would cover most use cases people have in relation to AWS

[xescugc]

Yeh we know, we actually had a chat on how to implement it but it's still in early stages sorry.