feat(user/yubikey): implement setup for Yubikey auth

Signed-off-by: Matej Focko <me@mfocko.xyz>

roles/user/yubikey/tasks/main.yml

@@ -0,0 +1,16 @@
+---
+- name: Create a Yubico directory
+  ansible.builtin.file:
+    path: ~/.yubico
+    state: directory
+    mode: 0744
+    owner: "{{ target_user }}"
+    group: "{{ target_user }}"
+
+- name: Create authorized Yubikeys
+  ansible.builtin.template:
+    src: templates/authorized_yubikeys
+    dest: ~/.yubico/authorized_yubikeys
+    mode: 0644
+    owner: "{{ target_user }}"
+    group: "{{ target_user }}"

roles/user/yubikey/templates/authorized_yubikeys

@@ -0,0 +1 @@
+{{ target_user }}:{{ yubikey_token_id }}