Support mapping of KType to j.l.reflect.Type

compiler/testData/codegen/boxWithJava/reflection/callInstanceJavaMethod/J.java

@@ -0,0 +1,11 @@
+public class J {
+    private final int param;
+
+    public J(int param) {
+        this.param = param;
+    }
+
+    public String foo(int[] arr, Object[] arr2, Integer y) {
+        return "" + param + arr[0] + arr2[0] + y;
+    }
+}