ref(user): Add sudo permissions with dropin file

Instead of changing a line in the sudoers file we just copy a new
drop-in file into the sudoers.d/ dir. Easier, less error-prone and
allows everyone to see 'who' the sudo enabled users are (since it is
world readable).

books/void_user.yaml

@@ -9,10 +9,13 @@
       loop: "{{ user_groups }}"
 
     - name: Enable sudo for "wheel" group
-      ansible.builtin.lineinfile:
-        path: "/etc/sudoers"
-        regexp: '^# %wheel ALL=(ALL) ALL$'
-        line: '%wheel ALL=(ALL) ALL'
+      ansible.builtin.copy:
+        content: "%wheel ALL=(ALL) ALL"
+        dest: "/etc/sudoers.d/10-wheel"
+        owner: root
+        group: root
+        mode: 0644
+        force: true
 
     - name: Add user
       ansible.builtin.user: