feat: Replace cli to cobra (#1855)

* Replace cli

* Replace cli

* Replace cli

* Format code

* Add compare case

* Add compare case

* Add compare case

* Support go style flag

* Support go style flag

* Add test case

tools/goctl/upgrade/cmd.go

@@ -0,0 +1,10 @@
+package upgrade
+
+import "github.com/spf13/cobra"
+
+// Cmd describes a upgrade command.
+var Cmd = &cobra.Command{
+	Use:   "upgrade",
+	Short: "Upgrade goctl to latest version",
+	RunE:  upgrade,
+}