Perf: add EntityFramework Core to legacy tests

Dapper.Tests.Performance/Benchmarks.EntityFramework.cs

 using BenchmarkDotNet.Attributes;
-using Dapper.Tests.Performance.Linq2Sql;
-using System;
-using System.Data.Linq;
 using System.Linq;
 
 namespace Dapper.Tests.Performance
@@ -9,8 +6,6 @@ namespace Dapper.Tests.Performance
     public class EF6Benchmarks : BenchmarkBase
     {
         private EntityFramework.EFContext Context;
-        private static readonly Func<DataClassesDataContext, int, Linq2Sql.Post> compiledQuery =
-            CompiledQuery.Compile((DataClassesDataContext ctx, int id) => ctx.Posts.First(p => p.Id == id));
 
         [Setup]
         public void Setup()

Dapper.Tests.Performance/LegacyTests.cs

@@ -19,6 +19,8 @@
 using Susanoo;
 using System.Configuration;
 using System.Threading.Tasks;
+using Dapper.Tests.Performance.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore;
 
 namespace Dapper.Tests.Performance
 {
@@ -143,16 +145,23 @@ public async Task RunAsync(int iterations)
 
                     var entityContext2 = new EFContext(connection);
                     tests.Add(id => entityContext2.Database.SqlQuery<Post>("select * from Posts where Id = {0}", id).First(), "Entity Framework: SqlQuery");
+                    
+                    var entityContext3 = new EFContext(connection);
+                    tests.Add(id => entityContext3.Posts.AsNoTracking().First(p => p.Id == id), "Entity Framework: No Tracking");
+                }, "Entity Framework");
 
-                    //var entityContext3 = new EFContext(connection);
-                    //tests.Add(id => entityFrameworkCompiled(entityContext3, id), "Entity Framework CompiledQuery");
+                // Entity Framework Core
+                Try(() =>
+                {
+                    var entityContext = new EFCoreContext(ConnectionString);
+                    tests.Add(id => entityContext.Posts.First(p => p.Id == id), "Entity Framework Core");
 
-                    //var entityContext4 = new EFContext(connection);
-                    //tests.Add(id => entityContext4.Posts.Where("it.Id = @id", new System.Data.Objects.ObjectParameter("id", id)).First(), "Entity Framework ESQL");
+                    var entityContext2 = new EFCoreContext(ConnectionString);
+                    tests.Add(id => entityContext2.Posts.FromSql("select * from Posts where Id = {0}", id).First(), "Entity Framework Core: FromSql");
 
-                    var entityContext5 = new EFContext(connection);
-                    tests.Add(id => entityContext5.Posts.AsNoTracking().First(p => p.Id == id), "Entity Framework: No Tracking");
-                }, "Entity Framework");
+                    var entityContext3 = new EFContext(connection);
+                    tests.Add(id => entityContext3.Posts.AsNoTracking().First(p => p.Id == id), "Entity Framework Core: No Tracking");
+                }, "Entity Framework Core");
 
                 // Dapper
                 Try(() =>