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/modules/users/views/list.component.html

@@ -10,6 +10,9 @@
   [showDetails]="true"
   [showAdd]="true"
   (onAdd)="openAddForm()"
-/>
-
+>
+  <ng-template #role let-data>
+    <catalog-role-tag [role]="data.role" />
+  </ng-template>
+</app-page-data-list>
 <user-form [(visible)]="visibleForm" (onSubmit)="refresh()" />