Migrate boxWithJava tests to multi-file framework

compiler/testData/codegen/boxWithJava/jvmField/constructorProperty.kt

@@ -0,0 +1,18 @@
+// FILE: Test.java
+
+public class Test {
+    public static String invokeMethodWithPublicField() {
+        C c = new C("OK");
+        return c.foo;
+    }
+}
+
+// FILE: simple.kt
+
+class C(@JvmField val foo: String) {
+
+}
+
+fun box(): String {
+    return Test.invokeMethodWithPublicField()
+}