Add Nextcloud deployment and management playbooks

- Introduced playbooks for health checks, Collabora updates, Nextcloud backups, upgrades, and Redis updates.
- Each playbook includes necessary tasks for managing services in a Docker environment.

nextcloud/check_stack_nextcloud.yml

@@ -0,0 +1,29 @@
+---
+- name: Upload and run stack health checks
+  hosts: proxmox
+  become: true
+
+  vars:
+    health_script_path: /data/compose/nextcloud/stack-health.sh
+
+  tasks:
+    - name: Upload stack-health.sh
+      ansible.builtin.copy:
+        src: files/stack-health.sh
+        dest: "{{ health_script_path }}"
+        mode: '0755'
+
+    - name: Run stack-health.sh
+      ansible.builtin.shell: "{{ health_script_path }}"
+      register: health
+      args:
+        executable: /bin/bash
+
+    - name: Show health output
+      ansible.builtin.debug:
+        msg: "{{ health.stdout | default('no stdout') }}"
+
+    - name: Fail if checks failed (rc != 0)
+      ansible.builtin.fail:
+        msg: "Health checks failed"
+      when: health.rc != 0