feat: add Kubernetes deployment with ArgoCD

- Add k8s/ manifests (Deployment, Service, Ingress)
- Use Kustomize for configuration
- ArgoCD application for GitOps deployment
- Traefik ingress with Let's Encrypt TLS
- Deploy script for CI/CD workflow

Deploys to: https://whalehunting.kube2.tricnet.de

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

k8s/service.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: whalehunting
+  namespace: whalehunting
+  labels:
+    app.kubernetes.io/name: whalehunting
+spec:
+  type: ClusterIP
+  ports:
+    - port: 80
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    app.kubernetes.io/name: whalehunting