Add support for transit gateway to transit gateway peering

[scottmacdonaldclearobject]

Summary

I am trying to peer together 2 transit gateways, and there is no module to accomplish this.

Issue Type

Feature Idea

Component Name

tgw_attachment, tgw_peering

Additional Information

Code of Conduct

• [x] I agree to follow the Ansible Code of Conduct

[tremble]

Closing as a duplicate of #1787