feat: add simulate command (#1269)

add simulate command

Author: puneet2019

cmd/elysd/cmd/root.go

@@ -272,6 +272,7 @@ func txCommand(basicManager module.BasicManager) *cobra.Command {
 		authcmd.GetMultiSignCommand(),
 		authcmd.GetMultiSignBatchCmd(),
 		authcmd.GetValidateSignaturesCommand(),
+		authcmd.GetSimulateCmd(),
 		flags.LineBreak,
 		authcmd.GetBroadcastCommand(),
 		authcmd.GetEncodeCommand(),