add builtime subcommand

Author: Abdul Dakkak

cmd/root.go

@@ -89,6 +89,7 @@ func init() {
 	RootCmd.AddCommand(cmd.EnvCmd)
 	RootCmd.AddCommand(cmd.GendocCmd)
 	RootCmd.AddCommand(cmd.CompletionCmd)
+	RootCmd.AddCommand(cmd.BuildTimeCmd)
 
 	cwd, err := os.Getwd()
 	if err != nil {