story: improve web3 UX

[bobetbat]

Description:
Set of handlers and UI components that makes web3 UX easier and smoother.
Required:

• other web3 wallet providers:
  • WalletConnect
  • ???
• Network(chain) switch:
  • Gnosis: xDAI
  • Polygon: USDC, mEUR
  • zkSync: DAI, USDC, USDT
  • ???
• Smooth wallet connection:
  • add network to metamask (if user did not set)
  • listen for networks and switch both wallet and Dapp if one of them changes
  • ???
• transaction confirmation and loading as modal window
• ???