Feature: Add support for quadlets. User can pass in quadlet units using `podman_quadlet_units`. Add support for secrets. User can pass in Ansible Vault encrypted secrets using `podman_secrets`. Reason: quadlets are the new way to implement applications in podman that use systemd services. quadlets allow you to specify everything you need to run your application - containers, services, volumes, networks, and more - using simple, systemd style unit files. Secrets such as passwords, tokens, keys, etc. are an important part of application configuration, so the role now allows those to be specified. Result: Users can deploy entire, complex applications using the podman system role using quadlet units.