Support mapping between Java and Kotlin reflection objects

compiler/testData/codegen/boxAgainstJava/reflection/mapping/javaFields.java

@@ -0,0 +1,9 @@
+public class javaFields {
+    public final int i;
+    public String s;
+
+    public javaFields(int i, String s) {
+        this.i = i;
+        this.s = s;
+    }
+}