Allow users to track self-custody cryptocurrency wallets by importing a blockchain wallet address (e.g. an Ethereum or Bitcoin public address) directly into Piere, rather than only being able to connect through a centralized exchange (CEX) like Coinbase or Kraken. This would let users who hold crypto in hardware wallets, MetaMask, or other non-custodial wallets see their on-chain balances alongside the rest of their finances in Piere.