Adding support for ZERϴ Network

[abalyasnikov]

Adding a new chain to the Explorer

1. JSON-RPC spec for Wallets
   • https://docs.zero.network/build-on-zero/network-information#zer%CE%B8-network
2. CASA namespace spec
   • https://github.com/ChainAgnostic/namespaces/tree/main/eip155
3. namespaces:
   • eip155
4. chains:
   • eip155:543210 - ZERϴ Network
5. RPC endpoints
   • https://rpc.zerion.io/v1/zero
6. SLIP-0044 coin type:
   • 0x8000003c (60 in decimal, same as Ethereum)
7. Block Explorer
   • https://explorer.zero.network

References
To ensure timely processing of your request, please provide the following references:

• Source of RPC endpoints (e.g. RPC docs): https://docs.zero.network/build-on-zero/network-information#zer%CE%B8-network
• Source of namespace (if non-EIP155) chain information (particularly chainIds): [link]

Additional context
ZERϴ Network is the first EVM-compatible rollup that eliminates the need for gas entirely within the network.

Despite the improvements in crypto UX, gas fees are still a significant barrier. Gas is complicated, confusing, and painful. To overcome gas once and for all and effectively set a new standard for onchain UX, we leveraged the ZK Stack.

[linear]

CR-570 Adding support for ZERϴ Network