Move `client eth-to-cosmos` to gorc (#138)
* moving eth_to_cosmos command from client to gorc
* moving eth_to_cosmos command from client to gorc
* moving eth_to_cosmos command from client to gorc
* moving eth_to_cosmos command from client to gorc
* Merge PR #139: gorc eth-to-cosmos feedback on #138
* port #132; support user amounts verbatim
* replace etherum_key (as mnemonic) with ethereum_key (as keystore key name)
Co-authored-by: Hannydevelop <ukpaiugochiibem @gmail.com>
Co-authored-by: Levi Cook <levicook@users.noreply.github.com>
Co-authored-by: Levi Cook <levicook@gmail.com>
