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/auth/pages/auth.component.html

@@ -7,8 +7,8 @@
       class="flex flex-col items-center justify-center px-12 py-10 h-auto bg-surface-card border border-surface-border rounded-lg shadow w-full max-w-md"
     >
       <div class="flex flex-col gap-4 text-center mb-10 items-center justify-center">
-        <img [src]="logo" alt="امتحانات شبه نهایی سنجش" class="w-20 h-auto" />
-        <span class="text-lg font-bold"> به پنل امتحانات شبه نهایی سنجش خوش آمدید. </span>
+        <img [src]="logo" alt="صندوق فروشگاهی" class="w-20 h-auto" />
+        <span class="text-lg font-bold"> به پنل صندوق فروشگاهی خوش آمدید. </span>
       </div>
 
       @if (activeStep() === "login") {