fix: missing import of RemoteHandler

Author: FabianHofmann

linopy/model.py

@@ -59,6 +59,7 @@
 from linopy.matrices import MatrixAccessor
 from linopy.objective import Objective
 from linopy.oetc import OetcHandler
+from linopy.remote import RemoteHandler
 from linopy.solvers import IO_APIS, available_solvers, quadratic_solvers
 from linopy.types import (
     ConstantLike,