feat(transaction): add transaction retrieval and DTO mapping

frontend/src/app/feature/transaction-history/transaction-history.component.ts

@@ -0,0 +1,17 @@
+import { ChangeDetectionStrategy, Component, inject } from '@angular/core';
+import { TransactionService } from '@service/transaction.service';
+import { Observable } from 'rxjs';
+
+@Component({
+  standalone: true,
+  selector: 'app-transaction-history',
+  imports: [],
+  templateUrl: './transaction-history.component.html',
+  styleUrl: './transaction-history.component.css',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class TransactionHistoryComponent {
+  private transactionService: TransactionService = inject(TransactionService);
+
+  transactions$: Observable<> = this.transactionService.getUsersTransactions();
+}