feat: implement wallet_getSubAccounts rpc#1676

montycheese merged 5 commits intomastercoinbase/coinbase-wallet-sdk:masterfrom

montanawong/ba-2308-sdk-implement-wallet_getsubaccounts-rpccoinbase/coinbase-wallet-sdk:montanawong/ba-2308-sdk-implement-wallet_getsubaccounts-rpcCopy head branch name to clipboard