add trade stream for ApolloX (#748)

Author: vslee

src/ExchangeSharp/API/Exchanges/ApolloX/ExchangeApolloXApi.cs

@@ -0,0 +1,20 @@
+using ExchangeSharp.BinanceGroup;
+using Newtonsoft.Json.Linq;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ExchangeSharp
+{
+	public sealed partial class ExchangeApolloXApi : BinanceGroupCommon
+	{
+		public override string BaseUrl { get; set; } = "https://fapi.apollox.finance";
+		public override string BaseUrlWebSocket { get; set; } = "wss://fstream.apollox.finance";
+
+		public override string BaseUrlApi => $"{BaseUrl}/fapi/v1";
+	}
+
+	public partial class ExchangeName { public const string ApolloX = "ApolloX"; }
+}

src/ExchangeSharp/API/Exchanges/BinanceGroup/BinanceGroupCommon.cs

@@ -22,7 +22,7 @@ namespace ExchangeSharp.BinanceGroup
 {
 	public abstract class BinanceGroupCommon : ExchangeAPI
 	{
-		public string BaseUrlApi => $"{BaseUrl}/api/v3";
+		public virtual string BaseUrlApi => $"{BaseUrl}/api/v3";
 
 		public string BaseUrlSApi => $"{BaseUrl}/sapi/v1";
 
@@ -53,6 +53,7 @@ protected BinanceGroupCommon()
 			NonceStyle = NonceStyle.UnixMilliseconds;
 			NonceOffset = TimeSpan.FromSeconds(15); // 15 seconds are deducted from current UTCTime as base of the request time window
 			MarketSymbolSeparator = string.Empty;
+			MarketSymbolIsUppercase = false;
 			WebSocketOrderBookType = WebSocketOrderBookType.DeltasOnly;
 			ExchangeGlobalCurrencyReplacements["BCC"] = "BCH";
 		}