TODOs for multi-platform support

[kanekoshoyu]

As you see in the code with translator and internal model, I have the arbitrage framework designed to support different exchange APIs. This will be done after the whole arbitrage data flow is complete with KuCoin. Below are the interesting crates I might think of using in the future.

• KuCoin https://github.com/escwdev/kucoin_rs
• Binance https://github.com/Igosuki/binance-rs-async
• ByBit https://github.com/negi-grass/crypto-botters