commands: add command to delete canceled invoice

Adds the deletecanceledinvoice by payment hash command.

cmd/commands/main.go

@@ -478,6 +478,7 @@ func Main() {
 		AddInvoiceCommand,
 		lookupInvoiceCommand,
 		listInvoicesCommand,
+		deleteCanceledInvoiceCommand,
 		ListChannelsCommand,
 		closedChannelsCommand,
 		listPaymentsCommand,