add network support for MEW wallet

[konopkja]

MEW wallet now supports also Optimism, we do not reflect that on https://ethereum.org/en/wallets/find-wallet/ listing

pls update their listing metadata to include Optimism

[SamarthJ2004]

Hi @konopkja , I would like to work on this.

[konopkja]

Hi @SamarthJ2004 there is already PR for this one

[corwintines]

Closing this out with above PR