feat: add unit of measure tables and seed data for material types management

backend/api/v1/modules/public/reference_data/material_types/routes.py

@@ -15,11 +15,17 @@ router = APIRouter(prefix="/material-types")
 async def list_material_types(
     page: int = Query(1, ge=1, description="Número de página"),
     page_size: int = Query(50, ge=1, le=100, description="Tamaño de página"),
+    type: str = Query(None, description="Filtrar por tipo (ACTIVO FIJO, MATERIALES, PRODUCTOS)"),
     db: Session = Depends(get_core_db),
     current_user: dict = Depends(get_current_user),
 ):
     skip = (page - 1) * page_size
     query = db.query(MaterialType)
+    
+    # Aplicar filtro por tipo si se proporciona
+    if type:
+        query = query.filter(MaterialType.type == type)
+    
     items = query.offset(skip).limit(page_size).all()
     total = query.count()
     return {