invoice-ninja: Add Ingress for HLC client portal

Tabitha wants to use the Invoice Ninja Client Portal and Stripe
integration for customer payments.

invoice-ninja/ingress.yaml

@@ -17,3 +17,30 @@ spec:
             name: invoice-ninja
             port:
               name: http
+
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: hlc-client-portal
+  labels:
+    app.kubernetes.io/name: hlc-client-portal
+    app.kubernetes.io/component: invoice-ninja
+  annotations:
+    cert-manager.io/cluster-issuer: zerossl
+spec:
+  tls:
+  - hosts:
+    - billing.hatchlearningcenter.org
+    secretName: hlc-client-portal-cert
+  rules:
+  - host: billing.hatchlearningcenter.org
+    http:
+      paths:
+      - path: /
+        pathType: Prefix
+        backend:
+          service:
+            name: invoice-ninja
+            port:
+              name: http