feat: Implement invoice management module with CRUD operations

- Added InvoiceHeader, InvoiceComplianceMx, InvoiceFinancials, InvoiceLogistics, InvoiceSalesDetails, and InvoiceCollections models.
- Created schemas for invoice operations including create, update, and response schemas.
- Developed services for handling business logic related to invoices, including retrieval, creation, updating, and deletion of invoices and their related data.
- Introduced routes for invoice management, enabling CRUD operations through a RESTful API.
- Integrated invoice routes into the main application router.
- Removed unused routers from the core module to streamline the API structure.

backend/api/v1/router.py

@@ -6,6 +6,7 @@ Agrega todos los módulos de la aplicación
 from fastapi import APIRouter
 
 # Importar routers de módulos
+from .modules.core.router import router as core_router
 from .modules.a76.router import router as a76_router
 from .modules.public.router import router as public_router
 
@@ -13,6 +14,7 @@ from .modules.public.router import router as public_router
 router = APIRouter()
 
 # Registrar módulos
+router.include_router(core_router)
 router.include_router(a76_router)
 router.include_router(public_router)