Add tests for nested destructuring

Author: seanchas116

tests/cases/fourslash/parameterWithNestedDestructuring.ts

@@ -0,0 +1,10 @@
+/// <reference path='fourslash.ts'/>
+
+////[[{foo: 'hello', bar: [1]}]]
+////  .map(([{foo, bar: [baz]}]) => /*1*/foo + /*2*/baz);
+
+goTo.marker('1');
+verify.quickInfoIs('var foo: string');
+
+goTo.marker('2');
+verify.quickInfoIs('var baz: number');