feat(bench press): add microIterations option

modules/benchmarks/src/change_detection/change_detection_benchmark.html

@@ -5,6 +5,8 @@
 <h2>Params</h2>
 <form>
   Iterations:
+  <input type="number" name="iterations" placeholder="iterations" value="20">
+  Number of checks:
   <input type="number" name="numberOfChecks" placeholder="numberOfChecks" value="900000">
   <br>
   <button>Apply</button>

modules/benchmarks/src/change_detection/change_detection_benchmark.js

@@ -138,9 +138,9 @@ function setUpChangeDetection(changeDetection:ChangeDetection, iterations) {
 export function main () {
   BrowserDomAdapter.makeCurrent();
   var numberOfChecks = getIntParameter('numberOfChecks');
+  var numberOfRuns = getIntParameter('iterations');
 
   var numberOfChecksPerDetector = 10;
-  var numberOfRuns = 20;
   var numberOfDetectors = numberOfChecks / numberOfChecksPerDetector / numberOfRuns;
 
   setUpReflector();