Refactor: Organize Ansible project structure

- Reorganized Ansible project structure to follow best practices.
- Created dedicated directories: , , , , and .
- Categorized playbooks into  (host-specific) and  (service-specific).
- Moved all roles into the  directory and standardized their naming conventions.
- Relocated  to  for better variable management.
- Renamed  to  to reflect its global variable scope.
- Created  to correctly set the  to the new  directory.
- Moved  and  into the  directory.
- Added  to  providing explanations for common commands.
- Cleaned up  directories from all individual roles to centralize version control.

roles/template_differ/tasks/main.yml

@@ -0,0 +1,42 @@
+#SPDX-License-Identifier: MIT-0
+---
+# tasks file for template-differ
+
+- name: Remove old ssh host keys
+  ansible.builtin.file:
+    path: /etc/ssh/ssh_host_*
+    state: absent
+
+- name: Generate SSH host keys
+  shell: ssh-keygen -A
+
+- name: Set a hostname
+  ansible.builtin.hostname:
+    name: "{{ new_hostname }}"
+
+
+- name: Interface IP change
+  template:
+    src: ../templates/interfaces
+    dest: /etc/network/interfaces
+    owner: root
+    group: root
+    mode: '0644'
+
+- name: Etc hosts change
+  template:
+    src: ../templates/hosts
+    dest: /etc/hosts
+    owner: root
+    group: root
+    mode: '0644'
+
+- name: sshd restart
+  service:
+    name: sshd
+    state: restarted
+
+- name: networking restart
+  service:
+    name: networking
+    state: restarted