Kotlin: Add a Kotlin 2 copy of the testsuite

java/ql/test-kotlin2/query-tests/MissingOverrideAnnotation/Test.kt

@@ -0,0 +1,25 @@
+open class A {
+    open fun m(): Int {
+        return 23
+    }
+
+    private fun n() {}
+
+    open val p = 5
+}
+
+interface I {
+    fun o()
+}
+
+class B : A(), I {
+    override fun m(): Int {
+        return 42
+    }
+
+    fun n() {}
+
+    override fun o() { }
+
+    override val p = 7
+}