Remove role lmn_teacherlaptop and extend role lmn_security

- Add variable to configure sudo-program permissions (`sudo_permissions`)
- Add variable to configure polkit-rules (`polkit_rules`)
- Migrate sudo and polkit permissions from lmn_teacherlaptop role to inventory

roles/lmn_security/handlers/main.yml

@@ -3,3 +3,8 @@
     name: sshd
     state: reloaded
   when: not run_in_installer|default(false)|bool
+
+- name: Restart polkit
+  ansible.builtin.systemd:
+    name: polkit
+    state: restarted