Implement object literal parsing; Instantiate classes from object literals

Essentially, if the contextual type is a class with a constructor that takes zero arguments or doesn't have a constructor at all, an object literal can be used to initialize a new instance of that class with preset values.

tests/parser/object-literal.ts

@@ -0,0 +1,9 @@
+var obj = {
+  a: 123,
+  b: "234",
+  "c": false,
+  d: {
+    a: 123,
+    "b": {}
+  }
+};

tests/parser/object-literal.ts.fixture.ts

@@ -0,0 +1,9 @@
+var obj = {
+  a: 123,
+  b: "234",
+  "c": false,
+  d: {
+    a: 123,
+    "b": {}
+  }
+};