feat(benchmark): add static_tree benchmark

Static binary component tree of depth 10, i.e. 1024 components.

Current numbers for `pureScriptTime` are:

JavaScript:

Baseline: 27.10+-9%
Ng2: 26.84+-8%
Ng1: 55.30+-14%

Dart:

Baseline: 30.13+-4%
Ng2: 45.94+-3%
Ng1: 128.88+-10%

I.e. in JS we are same speed as baseline right now!

Some background: We had a recent change in the compiler that merges components into their parents already during compilation (#2529). This made Ng2 2x faster in this benchmark (before the Ng2 JS time was 49.59+-14%ms).

Closes #3196

modules/benchmarks_external/src/index.html

@@ -8,6 +8,9 @@
     <li>
       <a href="tree/tree_benchmark.html">Tree benchmark</a>
     </li>
+    <li>
+      <a href="static_tree/tree_benchmark.html">Static tree benchmark</a>
+    </li>
     <li>
       <a href="tree/polymer/index.html">Polymer Tree benchmark</a>
     </li>