Adds Underwriter's carousel and admin features

src/app/services/underwriter.service.ts

@@ -0,0 +1,37 @@
+import { Injectable, inject } from '@angular/core';
+import { HttpClient, HttpParams } from '@angular/common/http';
+import { Observable } from 'rxjs';
+
+import { Underwriter } from '../interfaces/underwriter';
+import { getAppConfig } from './app-config.service';
+
+@Injectable({
+  providedIn: 'root',
+})
+export class UnderwriterService {
+  private http = inject(HttpClient);
+  private baseUrl = `${getAppConfig().apiBaseUrl}/api/underwriters`;
+
+  /** Fetch underwriters, optionally filtered by active status. */
+  getUnderwriters(active?: boolean): Observable<Underwriter[]> {
+    let params = new HttpParams();
+    if (active !== undefined) params = params.set('active', String(active));
+    return this.http.get<Underwriter[]>(this.baseUrl, { params });
+  }
+
+  getUnderwriter(id: number): Observable<Underwriter> {
+    return this.http.get<Underwriter>(`${this.baseUrl}/${id}`);
+  }
+
+  createUnderwriter(payload: Omit<Underwriter, 'id'>): Observable<Underwriter> {
+    return this.http.post<Underwriter>(this.baseUrl, payload);
+  }
+
+  updateUnderwriter(id: number, payload: Partial<Underwriter>): Observable<Underwriter> {
+    return this.http.put<Underwriter>(`${this.baseUrl}/${id}`, payload);
+  }
+
+  deleteUnderwriter(id: number): Observable<void> {
+    return this.http.delete<void>(`${this.baseUrl}/${id}`);
+  }
+}