New specific interfaces for Connection/Command

ClickHouse.Client.Benchmark/Benchmarks/SelectSingleColumnWithCompression.cs

@@ -7,6 +7,5 @@ public SelectSingleColumnWithCompression(string connectionString) : base(connect
         {
             Compression = true;
         }
-
     }
 }

ClickHouse.Client/ADO/ClickHouseCommand.cs

@@ -10,7 +10,7 @@
 
 namespace ClickHouse.Client.ADO
 {
-    public class ClickHouseCommand : DbCommand, IDisposable
+    public class ClickHouseCommand : DbCommand, IClickHouseCommand, IDisposable
     {
         private readonly CancellationTokenSource cts = new CancellationTokenSource();
         private readonly ClickHouseParameterCollection clickHouseParameterCollection = new ClickHouseParameterCollection();

ClickHouse.Client/ADO/ClickHouseConnection.cs

@@ -15,7 +15,7 @@
 
 namespace ClickHouse.Client.ADO
 {
-    public class ClickHouseConnection : DbConnection, ICloneable
+    public class ClickHouseConnection : DbConnection, IClickHouseConnection, ICloneable
     {
         private readonly HttpClient httpClient;
 

ClickHouse.Client/ADO/Readers/ClickHouseRawResult.cs

@@ -9,7 +9,7 @@ public class ClickHouseRawResult : IDisposable
     {
         private readonly HttpResponseMessage response;
 
-        public ClickHouseRawResult(HttpResponseMessage response)
+        internal ClickHouseRawResult(HttpResponseMessage response)
         {
             this.response = response;
         }

ClickHouse.Client/IClickHouseCommand.cs

@@ -0,0 +1,15 @@
+using System.Data;
+using System.Threading;
+using System.Threading.Tasks;
+using ClickHouse.Client.ADO;
+using ClickHouse.Client.ADO.Parameters;
+
+namespace ClickHouse.Client
+{
+    public interface IClickHouseCommand : IDbCommand
+    {
+        new ClickHouseDbParameter CreateParameter();
+
+        Task<ClickHouseRawResult> ExecuteRawResultAsync(CancellationToken cancellationToken);
+    }
+}

ClickHouse.Client/IClickHouseConnection.cs

@@ -0,0 +1,10 @@
+using System.Data;
+using ClickHouse.Client.ADO;
+
+namespace ClickHouse.Client
+{
+    public interface IClickHouseConnection : IDbConnection
+    {
+        new ClickHouseCommand CreateCommand();
+    }
+}