feat: output working kubeconfig for new cluster

kubeconfig.tf

@@ -0,0 +1,30 @@
+provider "kubernetes" {
+  host                   = module.k3s_cluster_v2.kubernetes.api_endpoint
+  cluster_ca_certificate = module.k3s_cluster_v2.kubernetes.cluster_ca_certificate
+  token                  = module.k3s_cluster_v2.kubernetes.token
+}
+
+resource "local_file" "kubeconfig-v2" {
+  filename = "${path.module}/kubeconfig-v2.yaml"
+
+  content = <<EOF
+apiVersion: v1
+clusters:
+- cluster:
+    certificate-authority-data: ${base64encode(module.k3s_cluster_v2.kubernetes.cluster_ca_certificate)}
+    server: ${module.k3s_cluster_v2.kubernetes.api_endpoint}
+  name: home-cloud-v2
+contexts:
+- context:
+    cluster: home-cloud-v2
+    user: admin
+  name: home-cloud-v2
+current-context: home-cloud-v2
+kind: Config
+preferences: {}
+users:
+- name: admin
+  user:
+    token: ${module.k3s_cluster_v2.kubernetes.token}
+  EOF
+}