feat: Configure production deployment with math-tables namespace and ingress

Changes made:

- Remove problematic configuration-snippet from base ingress

- Add namespace creation for math-tables

- Configure ingress with nginx class and letsencrypt-prod issuer

- Set production hostname to math-tables.cl1.parano.ch

- Reduce production replicas to 1

- Update copyright year in index.html

deploy/overlays/development/kustomization.yaml

@@ -0,0 +1,20 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+- ../../base
+
+# Development-specific patches
+patchesStrategicMerge:
+- deployment-patch.yaml
+
+# Development-specific configurations
+images:
+- name: math-exercises
+  newName: math-exercises
+  newTag: dev-latest
+
+# Development-specific labels
+commonLabels:
+  environment: development
+  security-level: standard