Reapply "Merge branch 'development' into 'main'"

This reverts commit 5c81746cd5.

charts/templates/ingress-https-ipwhitelist.yaml

@@ -0,0 +1,19 @@
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: {{ .Chart.Name }}-ipwhitelist
+  namespace: {{ .Release.Namespace }}
+  labels:
+    {{- include "htwkalender.labels" . | nindent 4 }}
+  annotations:
+    traefik.ingress.kubernetes.io/router.middlewares: "{{- printf "%s-%s@kubernetescrd" .Release.Namespace .Values.middlewares.httpsIPWhitelist.name }},traefik-https-redirect@kubernetescrd"
+spec:
+  ingressClassName: "PLACEHOLDER"
+  tls:
+    - hosts:
+      {{- range .Values.ingress.httpsIPWhitelist.hosts }}
+        - {{ .host | quote }}
+      {{- end }}
+      secretName: {{ $.Chart.Name }}-cert
+  rules:
+    {{- toYaml .Values.ingress.httpsIPWhitelist.hosts | nindent 4 }}