infra: introduce terraform/opentofu for proxmox management

- move ansible project within infra
- introduce terraform/opentofu for proxmox VM management

infra/ansible/roles/create-kubernetes-cluster/templates/k0sctl.yaml.j2

@@ -0,0 +1,70 @@
+apiVersion: k0sctl.k0sproject.io/v1beta1
+kind: Cluster
+metadata:
+  name: k0s-cluster
+spec:
+  hosts:
+    - ssh:
+        address: "{{ master1_ip }}"
+        user: "{{ ansible_vm_user }}"
+        keyPath: "{{ ansible_ssh_private_key_file }}"
+      role: controller+worker
+      hostname: "{{ master1_hostname }}"
+      noTaints: true
+    - ssh:
+        address: "{{ master2_ip }}"
+        user: "{{ ansible_vm_user }}"
+        keyPath: "{{ ansible_ssh_private_key_file }}"
+      role: controller+worker
+      hostname: "{{ master2_hostname }}"
+      noTaints: true
+    - ssh:
+        address: "{{ worker1_ip }}"
+        user: "{{ ansible_vm_user }}"
+        keyPath: "{{ ansible_ssh_private_key_file }}"
+      role: worker
+      hostname: "{{ worker1_hostname }}"
+    - ssh:
+        address: "{{ worker2_ip }}"
+        user: "{{ ansible_vm_user }}"
+        keyPath: "{{ ansible_ssh_private_key_file }}"
+      role: worker
+      hostname: "{{ worker2_hostname }}"
+  k0s:
+    version: "{{ k0s_version }}"
+    config:
+      spec:
+        api:
+          address: "{{ master1_ip }}"
+          port: 6443
+          k0sApiPort: 9443
+          sans:
+            - "{{ master1_ip }}"
+            - "{{ master2_ip }}"
+            - k8s.local
+            - api.k8s.local
+        network:
+          kubeProxy:
+            mode: iptables
+          kuberouter:
+            disabled: false
+          podCIDR: "{{ pod_CIDR }}"
+          serviceCIDR: "{{ service_CIDR }}"
+          provider: kuberouter
+        extensions:
+          helm:
+            concurrencyLevel: 5
+            repositories:
+              - name: metallb
+                url: https://metallb.github.io/metallb
+              - name: traefik
+                url: https://traefik.github.io/charts
+            charts:
+              - name: metallb
+                chartname: metallb/metallb
+                version: "{{ metallb_version }}"
+                namespace: metallb-system
+              - name: traefik
+                chartname: traefik/traefik
+                version: "{{ traefik_version }}"
+                namespace: traefik-system