feat: init support hgctl (#273)

Signed-off-by: bitliu <bitliu@tencent.com>

pkg/cmd/version.go

@@ -0,0 +1,38 @@
+// Copyright (c) 2022 Alibaba Group Holding Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"github.com/alibaba/higress/pkg/cmd/version"
+	"github.com/spf13/cobra"
+)
+
+// getVersionCommand returns the version cobra command to be executed.
+func getVersionCommand() *cobra.Command {
+	var output string
+
+	cmd := &cobra.Command{
+		Use:     "version",
+		Aliases: []string{"versions", "v"},
+		Short:   "Show versions",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return version.Print(cmd.OutOrStdout(), output)
+		},
+	}
+
+	cmd.PersistentFlags().StringVarP(&output, "output", "o", "", "One of 'yaml' or 'json'")
+
+	return cmd
+}