Add K8s deploy workflow

.github/workflows/k8s-deploy.yml

@@ -0,0 +1,29 @@
+name: Deploy to Kubernetes
+
+on:
+  push:
+    branches: ["development", "k8s-deploy"]
+  pull_request:
+    branches: ["development"]
+
+jobs:
+  deploy:
+    env:
+      NAMESPACE: "gn-demo-dev"
+      KUBECONFIG: "${{ github.workspace }}/.kube/config"
+
+    runs-on: ubuntu-24.04
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: "Write to $KUBECONFIG"
+        run: |
+          mkdir -p '${{ github.workspace }}/.kube' \
+            && echo '${{ secrets.K8S_CONFIG }}' | base64 -d > "$KUBECONFIG"
+
+      - run: "kubectl version"
+
+      - name: Deploy to Kubernetes
+        run: |
+          helm -n "$NAMESPACE" list