restructure

update readme
fix ansible role tags

ansible/roles/dnsmasq/tasks/main.yml

@@ -0,0 +1,18 @@
+- name: Install dnsmasq
+  apt:
+    name: dnsmasq
+- name: Disable systemd-resolved
+  systemd:
+    name: systemd-resolved
+    enabled: false
+    state: stopped
+- name: Copy dnsmasq configuration
+  copy:
+    src: "{{ role_path }}/files/dnsmasq.conf"
+    dest: "/etc/dnsmasq.conf"
+  register: config
+- name: Enable dnsmasq
+  systemd:
+    name: dnsmasq
+    enabled: true
+    state: "{{ 'restarted' if config.changed else 'started' }}"