Enable to expand roles with PermissionsBoundary

[JohnPreston]

Is your feature request related to a problem? Please describe.
I have permissions to create roles only with a given set of permissions boundaries. Therefore, all my IAM roles I create should have IAM boundaries set.

Describe the solution you'd like
In the configs/composex section, add a new section for IAM which allows to list boundary policy names

configs:
  composex:
    iam:
      boundaries:
        - policy1
        - policy2

Describe alternatives you've considered
Via the CLI, provide a list of IAM boundary names or ARNs which need to be added.

Additional context
Before adding the boundary, if an ARN is provided, it should be applicable to the current account.

[JohnPreston]

As there is only one permission boundary, it will only allow for one value set

configs:
  composex:
    iam:
      boundaries: policy_name_or_arn

For each service, if a specific policy ARN should be set to the IAM role, it can be overriden locally

services:
  serviceA:
    configs:
      iam:
        boundaries: other_policy_name_or_arn

or equally in the configs section

configs:
  serviceA:
    iam:
      boundaries: other_policy_name_or_arn