reboot(role): intro. reboot role, which handles local conns. gracefully

Also use this role instead of plain ansible.builtin.reboot.
This is in preparation for using ansible_pull as we don't want to have
ansible.builtin.reboot fail local playbook runs.

roles/reboot/meta/argument_specs.yaml

@@ -0,0 +1,13 @@
+argument_specs:
+  main:
+    options:
+      reboot__local_handling:
+        type: str
+        required: false
+        choices:
+          - "none"
+          - "ignore"
+          - "file"
+      reboot__local_handling_file:
+        type: path
+        required: false