[core][rewriter] add destructuring "test case" file

Author: velzie

rewriter/native/destructuring.js

@@ -0,0 +1,8 @@
+({ location } = self);
+({ location: a } = self);
+({ location = parent } = self);
+({ ["location"]: a } = self);
+({ ["location"]: a = parent } = self);
+({ parent: { location: x } } = self);
+({ parent: { location: x = parent } } = self);
+({ parent: { location } } = self);