feat: Implement Debian VM template creation and cloning on Proxmox

- Added default configuration for VM creation in defaults/main.yml.
- Created tasks for configuring the VM with UEFI, TPM, disks, GPU, and Cloud-Init in tasks/configure-vm.yml.
- Implemented clone creation and configuration logic in tasks/create-clones.yml.
- Added template conversion functionality in tasks/create-template.yml.
- Developed base VM creation logic in tasks/create-vm.yml.
- Included image download and caching tasks in tasks/download-image.yml.
- Introduced utility tasks for common operations in tasks/helpers.yml.
- Organized main orchestration logic in tasks/main.yml, with clear stages for each operation.
- Added pre-flight checks to validate the environment before execution in tasks/preflight-checks.yml.

tasks/download-image.yml

@@ -0,0 +1,41 @@
+---
+# download-image.yml - Download and cache Debian GenericCloud image
+
+- name: "[IMAGE] Check for Debian GenericCloud image"
+  stat:
+    path: "{{ debian_image_path }}"
+  register: debian_img
+  changed_when: false
+
+- name: "[IMAGE] Create template directory if missing"
+  file:
+    path: "/var/lib/vz/template/qemu"
+    state: directory
+    mode: "0755"
+  when: not debian_img.stat.exists
+
+- name: "[IMAGE] Download Debian GenericCloud qcow2"
+  get_url:
+    url: "{{ debian_image_url }}"
+    dest: "{{ debian_image_path }}"
+    mode: "0644"
+    timeout: 300
+  register: image_download
+  retries: 3
+  delay: 5
+  until: image_download is succeeded
+  when: not debian_img.stat.exists
+
+- name: "[IMAGE] Verify downloaded image integrity"
+  stat:
+    path: "{{ debian_image_path }}"
+  register: debian_img_final
+  changed_when: false
+  failed_when: not debian_img_final.stat.exists or debian_img_final.stat.size == 0
+
+- name: "[IMAGE] Display image info"
+  debug:
+    msg: |
+      Image cached at: {{ debian_image_path }}
+      Size: {{ debian_img_final.stat.size | int / 1024 / 1024 / 1024 | round(2) }} GB
+      Last modified: {{ debian_img_final.stat.mtime | timestamp_to_datetime }}