ENS Support

[QuintonC]

When a wallet is connected via the connect-wallet package, we should look up if the wallet also has an associated ENS and display it in the connected wallet state instead of the truncated address.

Concerns and challenges

• This should only be the desired functionality when:
  • Either an Alchemy or Infura provider are present
  • Why?
    • Minimize the risk of rate limiting for developers and the storefronts which these components may be rendered on.
• How to handle cross chain support (could defer this until Multichain support #3 is complete)

- [x] Initial ENS Support - Shopify/blockchain-components#8
- [ ] Loading ENS name component [Show spinner while loading ENS in ConnectButton]
- [ ] Decision: ENS Avatar support?
- [ ] Decision: Should the address pill allow folks to select either their ENS or their address?
- [ ] Decision: Should the address pill allow folks to select either their ENS or their address?