feat: kubesphere 4.0 (#6115)

* feat: kubesphere 4.0

Signed-off-by: ci-bot <ci-bot@kubesphere.io>

* feat: kubesphere 4.0

Signed-off-by: ci-bot <ci-bot@kubesphere.io>

---------

Signed-off-by: ci-bot <ci-bot@kubesphere.io>
Co-authored-by: ks-ci-bot <ks-ci-bot@example.com>
Co-authored-by: joyceliu <joyceliu@yunify.com>

pkg/kapis/gateway/v1alpha2/register.go

@@ -0,0 +1,49 @@
+/*
+ * Please refer to the LICENSE file in the root directory of the project.
+ * https://github.com/kubesphere/kubesphere/blob/master/LICENSE
+ */
+
+package v1alpha2
+
+import (
+	"net/http"
+
+	"github.com/emicklei/go-restful/v3"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	gatewayv1alpha2 "kubesphere.io/api/gateway/v1alpha2"
+	runtimeclient "sigs.k8s.io/controller-runtime/pkg/client"
+
+	"kubesphere.io/kubesphere/pkg/api"
+	"kubesphere.io/kubesphere/pkg/apiserver/rest"
+	"kubesphere.io/kubesphere/pkg/apiserver/runtime"
+)
+
+const (
+	GroupName = "gateway.kubesphere.io"
+	Version   = "v1alpha2"
+)
+
+var GroupVersion = schema.GroupVersion{Group: GroupName, Version: Version}
+
+func NewHandler(cache runtimeclient.Reader) rest.Handler {
+	return &handler{
+		cache: cache,
+	}
+}
+
+func NewFakeHandler() rest.Handler {
+	return &handler{}
+}
+
+func (h *handler) AddToContainer(container *restful.Container) error {
+	ws := runtime.NewWebService(GroupVersion)
+
+	ws.Route(ws.GET("/namespaces/{namespace}/availableingressclassscopes").
+		To(h.ListIngressClassScopes).
+		Doc("List ingressClassScope available for the namespace").
+		Param(ws.PathParameter("namespace", "The specified namespace.")).
+		Returns(http.StatusOK, api.StatusOK, []gatewayv1alpha2.IngressClassScope{}))
+
+	container.Add(ws)
+	return nil
+}