Problem: need to set accurate destination gas limit for layerzero message execution on Exocore

[adu-web3]

Description

As described in evmos/ethermint#1085, ethermint(evmos) would cost at least half of the gas limit no matter how much gas would actually be used by the actual tx execution. Currently we set DESTINATION_GAS_LIMIT as a constant(50_0000_0000), and Layerzero would set a fixed 74_0000_0000(not sure why not the gas limit we have set up) gas limit for the destination tx on Exocore, so the destination tx would consume fixed 37_0000_0000 gas.

Now that ExocoreNetwork/exocore#172 would make the gas estimation more accurate, we should set a more accurate destination gas limit to save layerzero messaging fee, while avoid out of gas failure on Exocore