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.kt

@@ -0,0 +1,15 @@
+// MODULE_KIND: AMD
+package foo
+
+@JsModule("lib")
+@native object A {
+    @native val x: Int = noImpl
+
+    @native fun foo(y: Int): Int = noImpl
+}
+
+fun box(): String {
+    assertEquals(23, A.x)
+    assertEquals(65, A.foo(42))
+    return "OK"
+}