feat(customer): add customer opening balance dialog.

src/containers/Dialogs/CustomerOpeningBalanceDialog/CustomerOpeningBalanceForm.schema.js

@@ -0,0 +1,10 @@
+import * as Yup from 'yup';
+
+const Schema = Yup.object().shape({
+  opening_balance_branch_id: Yup.string(),
+  opening_balance: Yup.number().nullable(),
+  opening_balance_at: Yup.date(),
+  opening_balance_exchange_rate: Yup.number(),
+});
+
+export const CreateCustomerOpeningBalanceFormSchema = Schema;