add referal code for registration

src/app/actions/auth.ts

@@ -137,6 +137,7 @@ export type FormState = {
 		phone: string;
 		companyName?: string;
 		agree: string;
+		referralCode?: string
 	},
 	mailConfirm?: boolean,
 	error: Record<string, string> | null
@@ -155,6 +156,7 @@ export async function registration(
 	const phone = formData.get('phone') as string || '';
 	const companyName = formData.get('companyName') as string || '';
 	const agree = formData.get('agree') as string || '';
+	const referralCode = formData.get('referralCode');
 
 	const SignupFormSchema = await getSignupFormSchema(accountType);