Add sample chaincode as tool

By adding the sample chaincode to the tools as dep prevents unwanted
cleanup, e.g., by dependabot

Signed-off-by: Marcus Brandenburger <bur@zurich.ibm.com>

Author: mbrandenburger

utils/tools.go

@@ -11,6 +11,7 @@ package utils
 
 import (
 	_ "github.com/client9/misspell/cmd/misspell"
+	_ "github.com/hyperledger/fabric-samples/asset-transfer-basic/chaincode-go"
 	_ "github.com/maxbrunsfeld/counterfeiter/v6"
 	_ "github.com/onsi/ginkgo/v2/ginkgo"
 	_ "golang.org/x/tools/cmd/goimports"