feat: add rent payment history and reversal dialogs

- Implemented RentPaymentHistoryServiceTest to validate payment retrieval with refunds and reversals.
- Created ReverseRentPaymentServiceTest to ensure correct handling of payment reversals and allocation releases.
- Developed rent-payment-allocation-dialog component with form for surplus allocation.
- Added rent-payment-refund-dialog component for processing refunds with validation.
- Introduced rent-payment-reversal-dialog component for reversing payments with reason input.
- Implemented utility functions for formatting Euro values and handling date formatting.
- Enhanced rent-payment-dialogs.spec.ts to cover new dialog functionalities and error handling.

frontend/src/app/components/rent-payment-dialog-result.ts

@@ -0,0 +1,9 @@
+import { RentPayment } from '../services/rent-payment.service';
+
+export const RENT_PAYMENT_DATA_STALE = 'RENT_PAYMENT_DATA_STALE';
+
+export type RentPaymentDialogResult = RentPayment | typeof RENT_PAYMENT_DATA_STALE;
+
+export function isRentPaymentDataStale(error: unknown): boolean {
+  return typeof error === 'object' && error !== null && 'status' in error && error.status === 409;
+}