feat: add field in callbacks data for custom calldata (#8353)

Co-authored-by: Gjermund Garaba <gjermund@garaba.net>

Author: 2 people

modules/apps/callbacks/types/callbacks.go

@@ -9,6 +9,8 @@ import (
 
 	sdk "github.com/cosmos/cosmos-sdk/types"
 
+	errorsmod "cosmossdk.io/errors"
+
 	channeltypes "github.com/cosmos/ibc-go/v10/modules/core/04-channel/types"
 	porttypes "github.com/cosmos/ibc-go/v10/modules/core/05-port/types"
 	ibcexported "github.com/cosmos/ibc-go/v10/modules/core/exported"