[binance] Add tickers

[bigscoop]

• Added mapping symbol -> currency pair (got from exchange info)
• Moved exchangeInfo-methods to MarketDataService
• Updated integration tests
• Added requests for idea http client
• Simplified dto's

[rizer1980]

Hi. Two requests for tickers: api/v3/ticker/price - Latest price for a symbol or symbols. api/v3/ticker/bookTicker - Best price/qty on the order book for a symbol or symbols. But there is no volume and quoteVolume and ticker time is only last moment.

If I understand correctly, we should get a 24 hour ticker. this api is fit: https://binance-docs.github.io/apidocs/spot/en/#24hr-ticker-price-change-statistics

[bigscoop]

Hi. Two requests for tickers: api/v3/ticker/price - Latest price for a symbol or symbols. api/v3/ticker/bookTicker - Best price/qty on the order book for a symbol or symbols. But there is no volume and quoteVolume and ticker time is only last moment.

If I understand correctly, we should get a 24 hour ticker. this api is fit: https://binance-docs.github.io/apidocs/spot/en/#24hr-ticker-price-change-statistics

Hi. Yep, good idea :+1: will change the implementation

[rizer1980]

done #4868

[bigscoop]

@timmolter

I propose to review and merge the https://github.com/knowm/XChange/pull/4868 first. Then I can integrate the changes to my branch

[timmolter]

merged 4868

[bigscoop]

merged 4868

done, feel free to review

[bigscoop]

@timmolter ping