feat: add Master Admin application functionality

src/app/core/services/base-api.service.ts

@@ -0,0 +1,34 @@
+import { HttpClient, HttpParams } from '@angular/common/http';
+import { Injectable, inject } from '@angular/core';
+import { Observable } from 'rxjs';
+import { API_CONFIG } from '../config/api.config';
+import { ApiResponse } from '../models/api-response.model';
+
+@Injectable({ providedIn: 'root' })
+export class BaseApiService {
+  private readonly http = inject(HttpClient);
+
+  protected get<T>(resource: string, params?: Record<string, string | number | boolean>): Observable<T> {
+    let httpParams = new HttpParams();
+
+    if (params) {
+      Object.entries(params).forEach(([key, value]) => {
+        httpParams = httpParams.set(key, String(value));
+      });
+    }
+
+    return this.http.get<T>(`${API_CONFIG.baseUrl}${resource}`, { params: httpParams });
+  }
+
+  protected post<T, R = unknown>(resource: string, body: T): Observable<R> {
+    return this.http.post<R>(`${API_CONFIG.baseUrl}${resource}`, body);
+  }
+
+  protected put<T, R = unknown>(resource: string, body: T): Observable<R> {
+    return this.http.put<R>(`${API_CONFIG.baseUrl}${resource}`, body);
+  }
+
+  protected delete<R = unknown>(resource: string): Observable<R> {
+    return this.http.delete<R>(`${API_CONFIG.baseUrl}${resource}`);
+  }
+}