amazon-ssm-agent: New package

amazon-ssm-agent: New package

AWS Systems Manager Agent (SSM Agent) is Amazon software that can be
installed and configured on an Amazon EC2 instance, an on-premises
server, or a virtual machine (VM). SSM Agent makes it possible for
Systems Manager to update, manage, and configure these resources. The
agent processes requests from the Systems Manager service in the AWS
Cloud, and then runs them as specified in the request. SSM Agent then
sends status and execution information back to the Systems Manager
service by using the Amazon Message Delivery Service.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>