Configure Viem

Make sure to include in your chain configuration the correct addresses.

We will submit a PR to Viem as soon as the staging phase is over to add the contracts to https://github.com/wevm/viem/blob/main/src/chains/definitions/berachainTestnetbArtio.ts

contracts: {
  ensRegistry: {
    address: '0xB0eef18971290b333450586D33dcA6cE122651D2',
  },
  ensUniversalResolver: {
    address: '0x41692Ef1EA0C79E6b73077E4A67572D2BDbD7057',
  },
}