Verify that the genesis hash is in the list of hashes in the verified_export.json file

[rht]

Currently it does the checking, but it only returns invalid result without explaining why: https://github.com/inblockio/aqua-verifier-js/blob/3680a730953d94c53f7f8113da0a4fae39f61596/index.ts#L491-L495.