Add dconf-editor to Manjaro install

Dconf editor is a great way to edit properties like touchpad palm
rejection and mouse acceleration.

playbooks/manjaro.yaml

@@ -44,6 +44,11 @@
         - wget
       state: present
     become: yes
+  - name: Ensure dconf-editor
+    community.general.pacman:
+      name: dconf-editor
+      state: present
+    become: yes
 
   # Install DNET CA
   - name: Download DNET CA