add toast to scaffold

scaffold/src/utils/toast.ts

+import { toast } from "sonner";
+
+export const showSuccess = (message: string) => {
+  toast.success(message);
+};
+
+export const showError = (message: string) => {
+  toast.error(message);
+};
+
+export const showLoading = (message: string) => {
+  return toast.loading(message);
+};
+
+export const dismissToast = (toastId: string) => {
+  toast.dismiss(toastId);
+};