Do not translate library (marked by annotation) declarations.

js/js.translator/testFiles/native/cases/library.kt

@@ -0,0 +1,15 @@
+package foo
+
+library class A() {
+    library fun f() {}
+    library fun f(a: Int) {}
+}
+
+library fun getResult() = false
+
+fun box(): Boolean {
+    val a = A()
+    a.f()
+    a.f(2)
+    return getResult()
+}