Kotlin: Add a Kotlin 2 copy of the testsuite

java/ql/test-kotlin2/library-tests/generic-selective-extraction/Test.java

@@ -0,0 +1,23 @@
+public class Test<T> {
+
+  public T field;
+  public T method() { return field; }
+
+}
+
+class FieldUsed {}
+class MethodUsed {}
+class ConstructorUsed {}
+class NeitherUsed {} 
+
+class User {
+
+  public static void test(Test<NeitherUsed> neitherUsed, Test<MethodUsed> methodUsed, Test<FieldUsed> fieldUsed) { 
+
+    fieldUsed.field = null;
+    methodUsed.method();
+    Test<ConstructorUsed> constructorUsed = new Test<ConstructorUsed>();
+
+  }
+
+}