Deploy to zkSync Era

[MantisClone]

Problem

Requested by Request Finance.

Considerations

• zkSync Era is EVM compatible. TODO Add source.
• zkSync Era is not supported by TheGraph Hosted Service, but it IS supported by Subgraph Studio. TheGraph Supported Networks

Definition of Done

• Deploy Payments Smart Contracts feat: support zkSyncEra and zkSyndTestnet chains #1259
• Remove the entries from BatchPayments/index.ts for both prod and test zksync. #1303
• Deploy payments-subgraph feat: zksync subgraph payments-subgraph#84
• Add zkSync to the Supported Chains page in the Docs RequestNetwork/docs.request.network@dcd74ee
• Add zkSync Era public query URL to README payments-subgraph#89
• Make sure Request Network SDK is updated to support zkSync Era payments