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/deployment.yaml

@@ -0,0 +1,45 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: whalehunting
+  namespace: whalehunting
+  labels:
+    app.kubernetes.io/name: whalehunting
+    app.kubernetes.io/component: web
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: whalehunting
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: whalehunting
+        app.kubernetes.io/component: web
+    spec:
+      containers:
+        - name: whalehunting
+          image: git.kube2.tricnet.de/admin/whalehunting:latest
+          ports:
+            - name: http
+              containerPort: 80
+              protocol: TCP
+          livenessProbe:
+            httpGet:
+              path: /
+              port: http
+            initialDelaySeconds: 5
+            periodSeconds: 10
+          readinessProbe:
+            httpGet:
+              path: /
+              port: http
+            initialDelaySeconds: 5
+            periodSeconds: 10
+          resources:
+            limits:
+              cpu: 100m
+              memory: 128Mi
+            requests:
+              cpu: 50m
+              memory: 64Mi