JS: Add call graph test with types

Author: asgerf

javascript/ql/test/library-tests/CallGraphs/AnnotatedTest/types.ts

@@ -0,0 +1,16 @@
+namespace NS {
+  export class C {
+    /** name:NS.C.m */
+    m() { }
+  }
+
+  export class D extends C { }
+}
+
+function t1(c: NS.C, d: NS.D) {
+  /** calls:NS.C.m */
+  c.m();
+
+  /** calls:NS.C.m */
+  d.m();
+}