tx: auto-import from wallet

[tomholford]

summary

Connect one or more wallets and auto-import Transactions.

ETH-only initially, unless there is a lib that makes cross-chain EZ. Eventually support other chains.
This data would be used to show real time net worth & P / L. Soon, visualizations.
Eventually address book, wallet client, injected dapp browser like Coinomi

pre-reqs

0. extend existing data model

• add Wallet MVC
• maybe add Account too? or is it fine to just show Wallet --> TX relationship for now? (w/o Account, can hack it by pivoting by address)
• add debit to TX model, will be easy to populate during auto-import

flow

1. add wallet button
2. connect wallet flow (e.g, with WalletConnect)
3. query decentralized chain index node (is there one for urbit? a la BTC)
4. load list of TX
5. show summary, approve all?
6. [v1] compare to existing imports, flag potential dupes
7. [v1] select for approval
8. persist new TX, redirect to wallet detail view