KT-12877: serialize information about file annotations. For each top-level declaration store containing file. Use this information to properly handle file-targeted JsModule.

js/js.translator/testData/box/jsModule/externalObject.js

@@ -0,0 +1,10 @@
+define("lib", [], function() {
+    A = {
+        x: 23,
+        foo: function(y) {
+            return this.x + y;
+        }
+    };
+
+    return A;
+});