feat: add fixed asset classes management page and embed functionality

- Implemented a new page for managing fixed asset classes with full CRUD functionality.
- Added filtering options for searching classes by code, description, type, and fraction.
- Integrated dialogs for inserting, editing, and deleting classes with validation.
- Enhanced error handling and user feedback with toast notifications.
- Created an embedded iframe for the fixed asset classes page in the merchandise section.

backend/api/v1/modules/a24/fa/fa_classes/routes.py

@@ -0,0 +1,32 @@
+"""
+Endpoints API para gestión de clases de activos fijos (FA)
+"""
+
+from typing import Any, Dict
+from fastapi import Depends, Query
+from sqlalchemy.orm import Session
+
+from core.database import get_core_db
+from core.security import get_current_user
+from api.v1.common.tenant_crud_routes import TenantCRUDRoutes, validate_access_to_resource
+
+from .dto import FAClassCreateDTO, FAClassResponseDTO, FAClassUpdateDTO
+from .service import FAClassService
+
+# Create router with generic CRUD routes
+crud_routes = TenantCRUDRoutes(
+    service=FAClassService,
+    create_schema=FAClassCreateDTO,
+    update_schema=FAClassUpdateDTO,
+    response_schema=FAClassResponseDTO,
+    prefix="/fa/classes",
+    tags=["a24 / fa / classes"],
+    resource_name="Fixed Asset Class",
+    id_name="fa_class_id",
+    enable_list=True,
+    enable_filters=True,
+    default_page_size=50,
+    max_page_size=100,
+)
+
+router = crud_routes.router