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/base/configmap.yaml

@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: math-exercises-config
+data:
+  # Application configuration
+  PORT: "8000"
+  LOG_LEVEL: "INFO"
+  MAX_REQUEST_SIZE: "10mb"
+  
+  # Security configuration
+  SECURE_COOKIES: "true"
+  CORS_ORIGINS: "math-exercises.local"
+  REQUEST_TIMEOUT: "30s"