feat: Implement price info card component and product categories with grid view

- Added `price-info-card.component` to display total amount, tax, and payable amount.
- Integrated price masking directive for formatted price display.
- Created `categories.component` to list product categories with loading skeletons.
- Implemented `grid-view.component` for displaying products in a grid layout.
- Enhanced `products.component` to manage category selection and product display.
- Introduced new models for product categories and stock responses.
- Updated `main.service.ts` to fetch product categories and stock data.
- Refactored `POSStore` to manage state for products, categories, and order items.
- Added utility functions for price formatting and number normalization.
- Included placeholder images for product and logo.

src/app/shared/components/pageDataList/page-data-list.component.ts

@@ -1,5 +1,5 @@
 import { PaginatorComponent, UikitCopyComponent, UikitEmptyStateComponent } from '@/uikit';
-import { formatJalali } from '@/utils';
+import { formatJalali, formatWithCurrency } from '@/utils';
 import { CommonModule } from '@angular/common';
 import {
   Component,
@@ -129,7 +129,7 @@ export class PageDataListComponent<I> {
         case 'boolean':
           return data ? 'بله' : 'خیر';
         case 'price':
-          return typeof data === 'number' ? data.toLocaleString() : '-';
+          return formatWithCurrency(data, false, 'ریال');
         default:
           break;
       }