feat: Implement product categories, stores, suppliers, and users management features

- Added ProductCategoriesService for handling product category API interactions.
- Created components for listing and viewing product categories.
- Implemented UI for managing product categories with a data list component.
- Developed StoresService for managing store-related API calls.
- Created components for listing and viewing stores with appropriate UI.
- Added SuppliersService for handling supplier API interactions.
- Implemented components for managing suppliers with a data list component.
- Developed UsersService for managing user-related API calls.
- Created components for listing and viewing users with appropriate UI.
- Enhanced not found page with improved layout and navigation options.

src/app/modules/suppliers/services/main.service.ts

@@ -0,0 +1,24 @@
+import { HttpClient } from '@angular/common/http';
+import { Injectable } from '@angular/core';
+import { Observable } from 'rxjs';
+import { SUPPLIERS_API_ROUTES } from '../constants';
+import { ISupplierRawResponse, ISupplierRequest, ISupplierResponse } from '../models';
+
+@Injectable({ providedIn: 'root' })
+export class SuppliersService {
+  constructor(private http: HttpClient) {}
+
+  private apiRoutes = SUPPLIERS_API_ROUTES;
+
+  getAll(): Observable<ISupplierResponse[]> {
+    return this.http.get<ISupplierRawResponse[]>(this.apiRoutes.list());
+  }
+
+  getSingle(supplierId: string): Observable<ISupplierResponse> {
+    return this.http.get<ISupplierRawResponse>(this.apiRoutes.single(supplierId));
+  }
+
+  create(data: ISupplierRequest): Observable<ISupplierResponse> {
+    return this.http.post<ISupplierRawResponse>(this.apiRoutes.list(), data);
+  }
+}