feat: add basic UI for block explorer

cmd/sonrd/main.go

@@ -14,6 +14,7 @@ import (
 func main() {
 	rootCmd := NewRootCmd()
 	rootCmd.AddCommand(tui.NewBuildProtoMsgCmd())
+	// rootCmd.AddCommand(tui.NewExplorerCmd())
 
 	if err := svrcmd.Execute(rootCmd, "", app.DefaultNodeHome); err != nil {
 		log.NewLogger(rootCmd.OutOrStderr()).Error("failure when running app", "err", err)