feat: added nftables tasks

Signed-off-by: Louis Vallat <louis@louis-vallat.xyz>

roles/nftables/tasks/main.yaml

@@ -0,0 +1,16 @@
+---
+- name: Install nftables
+  ansible.builtin.apt:
+    name: nftables
+    state: latest
+    update_cache: true
+
+- name: Enable nftables service
+  ansible.builtin.service:
+    name: nftables
+    state: started
+
+- name: Start nftables service
+  ansible.builtin.service:
+    name: nftables
+    enabled: true