Centralize Envoy Gateway routing

infrastructure/gateway/envoy/shared-public-gateway.yaml

@@ -0,0 +1,19 @@
+apiVersion: gateway.networking.k8s.io/v1
+kind: Gateway
+metadata:
+  name: public-gateway
+  namespace: apps
+spec:
+  gatewayClassName: envoy-gateway-class
+  infrastructure:
+    parametersRef:
+      group: gateway.envoyproxy.io
+      kind: EnvoyProxy
+      name: public-gateway-nodeport
+  listeners:
+    - name: http
+      protocol: HTTP
+      port: 80
+      allowedRoutes:
+        namespaces:
+          from: All