feat(evm): chain parameter acoss all queries/transactions

[jcs47]

This PR adds a chain parameter across all queries and transactions of the EVM module

[cgorenflo]

I think it makes more sense to add the chain to the ethTxCmd and ethQueryCmd (which both need to be renamed) and pass it into its child commands so that we have axelard tx evm [chain] [command] [args] instead of axelard tx evm [command] [chain] [args], otherwise the PR seems fine

[jcs47]

I think it makes more sense to add the chain to the ethTxCmd and ethQueryCmd (which both need to be renamed) and pass it into its child commands so that we have axelard tx evm [chain] [command] [args] instead of axelard tx evm [command] [chain] [args], otherwise the PR seems fine

I thought about doing that, but wouldn't that only work for chains included in the genesis file? How about chains added on-the-fly? Can we update the cobra commands in run-time? Nevermind, I was thinking about the hard-coded approach we used to have in earlier versions of axelar-core, for the bitcoin networks.

[jcs47]

I tried to implement Chris suggestion, but it doesn't seem like it is possible: spf13/cobra#610

Since Chris already approved the PR and gave its blessing to merge this PR as is, I am going to go with what we have now