add a number of pkgs

- putting package deps and pkgnames in vars/main.yml

tasks/pkgs/duf.yml

@@ -0,0 +1,9 @@
+---
+- ansible.builtin.include_tasks:
+    file: "pkgs/go.yml"
+  when:
+    - pkgconfig_go is undefined
+
+- name: append to gopkgs
+  ansible.builtin.set_fact:
+    gopkgs: "{{ gopkgs + [ 'github.com/muesli/duf@latest' ] }}"