clean up, refactor, documentation

- reducing amount of splitting in configs
- documenting configuration

tasks/pkgs/kitty.yml

@@ -2,7 +2,9 @@
 - ansible.builtin.include_vars:
     file: kitty.yml
     name: _kitty
+- ansible.builtin.set_fact:
+    pkgconfig.kitty: "{{ _kitty | ansible.builtin.combine(pkgconfig.kitty) }}"
 
 - name: add to syspkgs
   ansible.builtin.set_fact:
-    syspkgs: "{{ syspkgs + _kitty[ansible_system].pkgs }}"
+    syspkgs: "{{ syspkgs + pkgconfig.kitty.pkgs[ansible_system] }}"