[tests] Add js-perf-test for %TypedArray%.prototype.sort

test/js-perf-test/TypedArrays/copywithin.js

 // Copyright 2017 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 new BenchmarkSuite('CopyWithin', [1000], [
   new Benchmark('CopyWithin-Large', false, false, 0,
                 CopyWithinLarge, CopyWithinLargeSetup, CopyWithinLargeTearDown),
 ]);
 
 var initialLargeFloat64Array = new Array(10000);
@@ skipping 12 matching lines @@
 }
 
 function CopyWithinLargeTearDown() {
   for (var i = 0; i < 5000; ++i) {
     if (largeFloat64Array[i + 5000] !== i) {
       throw new TypeError("Unexpected result!\n" + largeFloat64Array);
     }
   }
   largeFloat64Array = void 0;
 }