Add vault ABI methods

This is a skill description to add smart contract

Inputs

1. Vault protocol name
2. Smart contract address and a blockchain as a blockchain explorer link
3. What methods to cover

Vault classes

Vault protocol classes can be found in eth_defi/erc_4626/vault_protocol folder. Each vault protocol has its own class. There are 40+ protocols. Some protocol share classes and extend other protocols.

Smart contracts

Each vault class wraps a JSON-RPC calls to an Ethereum smart contract. These smart contracts are described by ABI files in eth_defi/abi folder.

Step 1) Identify the proxy class