feat(gateway-api): add HTTPRoute support

Add support for Kubernetes Gateway API HTTPRoute resource as a modern
alternative to Ingress. The implementation follows the same pattern as
the existing Ingress template.

Changes:
- Add HTTPRoute template with configurable parentRefs, hostnames, and rules
- Add httpRoute section to values.yaml with generic examples
- Update Chart version from 2.5.0 to 2.6.0
- Add Artifact Hub changelog annotation
- Add HTTPRoute documentation to README

Co-Authored-By: Claude <noreply@anthropic.com>
Signed-off-by: Aleksei Sviridkin <f@lex.la>

charts/jellyfin/templates/httproute.yaml

@@ -0,0 +1,33 @@
+{{- if .Values.httpRoute.enabled }}
+apiVersion: gateway.networking.k8s.io/v1
+kind: HTTPRoute
+metadata:
+  name: {{ include "jellyfin.fullname" . }}
+  labels:
+    {{- include "jellyfin.labels" . | nindent 4 }}
+  {{- with .Values.httpRoute.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  {{- with .Values.httpRoute.parentRefs }}
+  parentRefs:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  {{- with .Values.httpRoute.hostnames }}
+  hostnames:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  rules:
+    {{- range .Values.httpRoute.rules }}
+    - matches:
+        {{- range .matches }}
+        - path:
+            type: {{ .path.type }}
+            value: {{ .path.value }}
+        {{- end }}
+      backendRefs:
+        - name: {{ include "jellyfin.fullname" $ }}
+          port: {{ $.Values.service.port }}
+    {{- end }}
+{{- end }}