Feature Request: api wallet trading

[levx-me]

Currently CoreWriterLib.placeLimitOrder() can only be called against the contract itself but hyperliquid api supports api wallet or agent wallet which enables an account to trade on behalf of the contract which is a powerful feature.

This won't be a high priority but it'll be great if it supports api wallet as well so that I can test just like in production environments.

Docs: https://hyperliquid.gitbook.io/hyperliquid-docs/for-developers/api/nonces-and-api-wallets