add multiple packages

- stub only: dbeaver, gns3, godot, heroic
- partial:
  - Darwin: httpiegui, jellyfin, libreoffic, pgadmin, tailscale
- full: thunderbird, zfs, zsh

tasks/pkgs/gns3.yml

@@ -0,0 +1,5 @@
+# TODO: implement
+---
+- name: append to syspkgs
+  debug:
+    msg: "NOT IMPLEMENTED YET"