Added for new features
* Add method TransferToMaster():
>Send request to transfer asset from subaccount to main account
Binance, OKX: not additional settings needed
Bitfinex: for subaccount setting 2FA method, set WITHDRAWAL permission for API key,
in config for subaccount set 2FA key and master account EMail
Huobi: in config for subaccount set master_name for Main account
Update
* Up requirements aiohttp to 3.8.4
* Some minor improvements