Migrate boxWithJava tests to multi-file framework

compiler/testData/codegen/boxWithJava/allWildcardsOnClass.kt

@@ -0,0 +1,47 @@
+// FILE: JavaClass.java
+
+public class JavaClass {
+
+    public static class C extends B {
+        public OutPair<String, Integer> foo() {
+            return super.foo();
+        }
+
+        public In<Object> bar() {
+            return super.bar();
+        }
+    }
+
+    public static String test() {
+        A a = new C();
+
+        if (!a.foo().getX().equals("OK")) return "fail 1";
+        if (!a.foo().getY().equals(123)) return "fail 2";
+
+        if (!a.bar().make("123").equals("123")) return "fail 3";
+
+        return "OK";
+    }
+}
+
+// FILE: main.kt
+
+class OutPair<out X, out Y>(val x: X, val y: Y)
+class In<in Z> {
+    fun make(x: Z): String = x.toString()
+}
+
+@JvmSuppressWildcards(suppress = false)
+interface A {
+    fun foo(): OutPair<CharSequence, Number>
+    fun bar(): In<String>
+}
+
+abstract class B : A {
+    override fun foo(): OutPair<String, Int> = OutPair("OK", 123)
+    override fun bar(): In<Any> = In()
+}
+
+fun box(): String {
+    return JavaClass.test();
+}