fix: make the web3 interface extendable

[frolovdev]

IWeb3 and I prefixing - naming negotiatable

Wanna achieve something like this

import {Web3ProviderConnector} from '1inch/multicall';

declare module '1inch/multicall' {
    interface IWeb3CallInfo {
        ololol: string
        someNewField: string
    }
}

class OlololProvider extends Web3ProviderConnector {
    ethCall(
        contractAddress: string,
        callData: string,
        blockNumber = 'latest'
    ): Promise<string> {
        return this.web3Provider.eth.call(
            {
                to: contractAddress,
                data: callData,
                ololol: 'ololol',
                someNewField: 'someNewField'
            },
            blockNumber
        );
    }
}

required to support custom eth call, for example

 return this.web3Provider.eth.call(
            {
                to: contractAddress,
                data: callData,
                maxFeePerGas: '50000000000000',
                maxPriorityFeePerGas: '0',
                gas: 100000000
            },
            blockNumber
        )