Generate delegates to multifile class members in package facade classes

(unless using -Xmultifile-package-facades option)

compiler/testData/codegen/boxWithJava/fileClasses/withPackageFacade/Baz.java

@@ -0,0 +1,7 @@
+import test.TestPackage;
+
+public class Baz {
+    public static String baz() {
+        return TestPackage.foo() + TestPackage.bar();
+    }
+}

compiler/testData/codegen/boxWithJava/fileClasses/withPackageFacade/bar.kt

@@ -0,0 +1,5 @@
+@file:JvmName("Util")
+@file:JvmMultifileClass
+package test
+
+public fun bar(): String = "K"

compiler/testData/codegen/boxWithJava/fileClasses/withPackageFacade/foo.kt

@@ -0,0 +1,4 @@
+@file:[JvmName("Util") JvmMultifileClass]
+package test
+
+public fun foo(): String = "O"

compiler/testData/codegen/boxWithJava/fileClasses/withPackageFacade/withPackageFacade.kt

@@ -0,0 +1,5 @@
+package test
+
+import Baz
+
+fun box(): String = Baz.baz()