Update to WalletConnect v2

[chrishobcroft]

How to close this issue:

This issue can be closed when WallETH is listed here: https://explorer.walletconnect.com/registry?version=2

Context

WalletConnect is the first item in WallETH's list of features:

This issue is to track the research, design and development to update WallETH to version 2 of WalletConnect.

Proposed Project Scope

Phase 1: UX Research (optional): understand how users use WallETH today, to connect to WalletConnect.

Phase 2 (optional): UX Design - design the user experience journey and information architecture for connecting to WalletConnect v2.

Phase 3: Implement and Test: implement WallETH to connect to WalletConnect v2

Links

https://docs.walletconnect.com/2.0/

Cc.

@pedrouid