add binder for connector

pkg/connector/option.go

@@ -20,3 +20,15 @@ type ConnectOptions struct {
 }
 
 type ConnectOption func(opts *ConnectOptions)
+
+type BindOptions struct {
+	Mux bool
+}
+
+type BindOption func(opts *BindOptions)
+
+func MuxBindOption(mux bool) BindOption {
+	return func(opts *BindOptions) {
+		opts.Mux = mux
+	}
+}