add ledger sign comment

cmd/sign_ledger.go

@@ -0,0 +1,44 @@
+package cmd
+
+import (
+	"github.com/smartcontractkit/ccip-owner-contracts/tools/signing"
+	"github.com/spf13/cobra"
+)
+
+var derivationPath []uint
+
+var SignLedgerCmd = &cobra.Command{
+	Use:   "sign-pk",
+	Short: "Sign a proposal with a private key",
+	Long:  `Configure a private key in a .env file (using the PRIVATE_KEY var) and sign a proposal with it.`,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		// Load proposal
+		proposal, err := LoadProposal(proposalType, proposalPath)
+		if err != nil {
+			return err
+		}
+
+		// convert derivation path to []uint32
+		derivationPathUint32 := make([]uint32, len(derivationPath))
+		for i, v := range derivationPath {
+			derivationPathUint32[i] = uint32(v)
+		}
+
+		err = signing.SignLedger(derivationPathUint32, proposal)
+		if err != nil {
+			return err
+		}
+
+		// Write proposal to file
+		err = WriteProposalToFile(proposal, proposalPath)
+		if err != nil {
+			return err
+		}
+
+		return nil
+	},
+}
+
+func init() {
+	SignLedgerCmd.Flags().UintSliceVar(&derivationPath, "derivation-path", []uint{44, 60, 0, 0, 0}, "Derivation path for the Ledger")
+}