Kotlin: Add a Kotlin 2 copy of the testsuite

java/ql/test-kotlin2/library-tests/extensions_recursion/element.expected

@@ -0,0 +1,26 @@
+| file://:0:0:0:0 |  | Package |
+| test.kt:0:0:0:0 | TestKt | Class |
+| test.kt:0:0:0:0 | test | CompilationUnit |
+| test.kt:2:1:4:1 | bar | ExtensionMethod |
+| test.kt:2:1:4:1 | boolean | TypeAccess |
+| test.kt:2:6:2:6 | T | TypeVariable |
+| test.kt:2:9:2:14 | <this> | Parameter |
+| test.kt:2:9:2:14 | Foo<T> | TypeAccess |
+| test.kt:2:9:2:14 | T | TypeAccess |
+| test.kt:2:31:4:1 | { ... } | BlockStmt |
+| test.kt:3:5:3:15 | return ... | ReturnStmt |
+| test.kt:3:12:3:15 | true | BooleanLiteral |
+| test.kt:6:1:10:1 | Foo | Class, GenericType, ParameterizedType |
+| test.kt:6:1:10:1 | Foo | Constructor |
+| test.kt:6:1:10:1 | super(...) | SuperConstructorInvocationStmt |
+| test.kt:6:1:10:1 | { ... } | BlockStmt |
+| test.kt:6:1:10:1 | { ... } | BlockStmt |
+| test.kt:6:11:6:11 | T | TypeVariable |
+| test.kt:7:5:9:5 | boolean | TypeAccess |
+| test.kt:7:5:9:5 | foo | Method |
+| test.kt:7:24:9:5 | { ... } | BlockStmt |
+| test.kt:8:9:8:20 | return ... | ReturnStmt |
+| test.kt:8:16:8:20 | T | TypeAccess |
+| test.kt:8:16:8:20 | TestKt | TypeAccess |
+| test.kt:8:16:8:20 | bar(...) | MethodCall |
+| test.kt:8:16:8:20 | this | ThisAccess |

java/ql/test-kotlin2/library-tests/extensions_recursion/element.ql

@@ -0,0 +1,5 @@
+import java
+
+from Element e
+where e.fromSource()
+select e, concat(e.getAPrimaryQlClass(), ", ")

java/ql/test-kotlin2/library-tests/extensions_recursion/test.kt

@@ -0,0 +1,11 @@
+
+fun <T> Foo<T>.bar(): Boolean {
+    return true
+}
+
+class Foo<T> {
+    fun foo(): Boolean {
+        return bar()
+    }
+}
+