Correctly setup ibc tendermint client genesis.json

[cmwaters]

There is a file called genesis.json that is setup by the operator and provides the information needed to initialize the sp1 tendermint smart contract on reth. Right now these are filled with somewhat dummy values that don't actually reflect the state of simapp. We need to fix this which involves querying simapp and populating this genesis.json file in the scripts directory.

[optional] It may be more informative if we rename genesis.json to something like simapp_client.json so as to not get confused with the rollup and simapp genesis files