Add Kubernetes Gateway Provider

Co-authored-by: Jean-Baptiste Doumenjou <925513+jbdoumenjou@users.noreply.github.com>

docs/content/reference/dynamic-configuration/kubernetes-gateway-rbac.yml

@@ -0,0 +1,49 @@
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: gateway-role
+rules:
+  - apiGroups:
+      - ""
+    resources:
+      - services
+      - endpoints
+      - secrets
+    verbs:
+      - get
+      - list
+      - watch
+  - apiGroups:
+      - networking.x-k8s.io
+    resources:
+      - gatewayclasses
+      - gateways
+      - httproutes
+    verbs:
+      - get
+      - list
+      - watch
+  - apiGroups:
+      - networking.x-k8s.io
+    resources:
+      - gatewayclasses/status
+      - gateways/status
+      - httproutes/status
+    verbs:
+      - update
+
+---
+kind: ClusterRoleBinding
+apiVersion: rbac.authorization.k8s.io/v1beta1
+metadata:
+  name: gateway-controller
+
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: gateway-role
+subjects:
+  - kind: ServiceAccount
+    name: traefik-controller
+    namespace: default