feat: add product management features and integrate role selection

- Added PRODUCTS_ROUTES to app routing.
- Removed roles.const.ts and related references to central-auth-roles.
- Updated login component to remove role selection logic.
- Integrated ToastService for success notifications in customer, inventory, product brand, product category, supplier, and user forms.
- Implemented product and category selection fields in product form.
- Created reusable select components for product brands and categories.
- Enhanced user form with password validation and role selection.
- Established roles service for fetching roles from the API.

src/app.routes.ts

@@ -2,6 +2,7 @@ import { CUSTOMERS_ROUTES } from '@/modules/customers/constants';
 import { INVENTORIES_ROUTES } from '@/modules/inventories/constants';
 import { PRODUCT_BRANDS_ROUTES } from '@/modules/productBrands/constants';
 import { PRODUCT_CATEGORIES_ROUTES } from '@/modules/productCategories/constants';
+import { PRODUCTS_ROUTES } from '@/modules/products/constants';
 import { STORES_ROUTES } from '@/modules/stores/constants';
 import { SUPPLIERS_ROUTES } from '@/modules/suppliers/constants';
 import { USERS_ROUTES } from '@/modules/users/constants';
@@ -24,6 +25,7 @@ export const appRoutes: Routes = [
       ...PRODUCT_CATEGORIES_ROUTES,
       ...CUSTOMERS_ROUTES,
       ...INVENTORIES_ROUTES,
+      ...PRODUCTS_ROUTES,
       { path: 'uikit', loadChildren: () => import('./app/pages/uikit/uikit.routes') },
       { path: 'documentation', component: Documentation },
       { path: 'pages', loadChildren: () => import('./app/pages/pages.routes') },