terraform resouce: aws iam user policy attachment

See also

• Terraform IAM resources: aws_iam_user, aws_iam_group, aws_iam_role, aws_iam_role_policy_attachment, aws_iam_policy, aws_iam_role_policy, aws_iam_user_policy, aws_iam_user_policy_attachment, aws_iam_access_key, aws_iam_group_policy, aws_iam_group_policy_attachment, aws_iam_openid_connect_provider