refactor(bootstrap): restructure package lists to self-contained per-OS dicts with base/extra/conditional

roles/bootstrap/tasks/void.yml

@@ -1,21 +1,25 @@
 ---
 - name: Bootstrap Void Linux
   vars:
-    bootstrap_void_packages: >-
+    _config: "{{ lookup('vars', bootstrap_var_key) }}"
+    _base_packages: "{{ _config.base | join(' ') }}"
+    _extra_packages: >-
       {{
-        lookup('vars', bootstrap_var_key) | reject('equalto', '') | join(' ')
+        ((_config.extra | default([])) + (_config.conditional | default([])))
+        | reject('equalto', '')
+        | join(' ')
       }}
   block:
-    - name: Install Void Linux base packages
+    - name: Install Void Linux base
       ansible.builtin.command: >
-        xbps-install -Sy -r /mnt -R https://repo-default.voidlinux.org/current void-repo-nonfree base-system
+        xbps-install -Sy -r /mnt -R https://repo-default.voidlinux.org/current {{ _base_packages }}
       register: bootstrap_void_base_result
       changed_when: bootstrap_void_base_result.rc == 0
 
     - name: Install extra packages
-      when: bootstrap_void_packages | length > 0
+      when: _extra_packages | trim | length > 0
       ansible.builtin.command: >
-        xbps-install -Su -r /mnt {{ bootstrap_void_packages }}
+        xbps-install -Su -r /mnt {{ _extra_packages }}
       register: bootstrap_void_extra_result
       changed_when: bootstrap_void_extra_result.rc == 0