nit: migrate to the new cosmos/evm repo

[reecepbcups]

Just some basic find and replaces, can use https://github.com/ondoprotocol/ondochain/pull/28 as my template for changes

[reecepbcups]

also improve ChainID UX: https://github.com/ondoprotocol/ondochain/pull/44 & https://github.com/ondoprotocol/ondochain/pull/46