huge rework in order to take full advantage of ansible roles

ansible/roles/notification/tasks/main.yml

@@ -0,0 +1,11 @@
+---
+- name: Install Notification Daemon
+  become: true
+  pacman:
+    name: notification-daemon
+    state: present
+- name: Setup Notification Daemon
+  become: true
+  synchronize:
+    src: notification/notification.service
+    dest: /usr/share/dbus-1/services/org.freedesktop.Notification.service