New podman::quadlet type for quadlet units

Assuming at least podman 4.4.0 the new type `podman::quadlet`
will create a quadlet unit files for a container, volume or pod
which will in turn generate a service unit for managing the container,
pod or volume.

Boot root and rootless containers are supported.

The included examples are operational however.

Note that pod quadlets are only supported with podman 5.

.fixtures.yml

@@ -3,6 +3,7 @@
 ---
 fixtures:
   forge_modules:
+    systemd: "puppet/systemd"
     stdlib: "puppetlabs/stdlib"
     concat: "puppetlabs/concat"
     selinux_core: "puppetlabs/selinux_core"

README.md

@@ -189,6 +189,36 @@ Several additional examples are in a separate [github project](https://github.co
 a Traefik container configuration that enables SSL termination and proxy access to other containers running on the host, with a dynamic
 configuration directory enabling updates to proxy rules as new containers are added and/or removed.
 
+## Creating Containers,Volumes, Pods, ... with Quadlet Unit Files
+
+Container unit files can be created and managed, for example:
+
+```puppet
+podman::quadlet{'centos.container':
+  ensure          => present,
+  unit_entry     => {
+   'Description' => 'Trivial Container that will be very lazy',
+  },
+  service_entry       => {
+    'TimeoutStartSec' => '900',
+  },
+  container_entry => {
+    'Image' => 'quay.io/centos/centos:latest',
+    'Exec'  => 'sh -c "sleep inf'
+  },
+  install_entry   => {
+    'WantedBy' => 'default.target'
+  },
+  active          => true,
+}
+
+```
+
+Will create a service `centos.service` that is then started and enabled for boot.
+
+Similarly quadlets for volumes, pods, ... can be created in a similar manner
+
+
 ## Limitations
 
 The module was written and tested with RedHat/CentOS, but should work with any distribution that uses systemd and includes