Add a new linked/external wallet

import NorthstakeApi, { AddLinkedWalletRequest } from '@northstake/northstakeapi'
const api = new NorthstakeApi('apiKey', 'privateKey')

const newLinkedWallet : AddLinkedWalletRequest = {
    walletName: 'test',
    asset: 'ETH',
    walletAddress: '0x1234567890123456789012345678901234567890',
  }


const  {body: result} = await api.linkedWallets.addLinkedWallet(newLinkedWallet)