Make new http client for inquiring several information.

For invoke(as execute) contract, parameters are packed by using ABI.

After call(as query) solidity contract, the response of chain is unpacked by ABI.

Provide cosmos sdk client.

Make new evm client using RPC URL which normally TCP port number is 8545.

Provide cosmos sdk tx factory.

Provide cosmos sdk keyring.

Gas is not consumed when querying.