Implement tests map generator and refactor folder structure to spec tests linking

compiler/tests-spec/testData/codegen/box/linked/type-system/introduction/p-5/pos/2.1.kt

@@ -0,0 +1,32 @@
+// WITH_RUNTIME
+/*
+ * KOTLIN CODEGEN BOX SPEC TEST (POSITIVE)
+ *
+ * SPEC VERSION: 0.1-draft
+ * PLACE: type-system, introduction -> paragraph 5 -> sentence 2
+ * NUMBER: 1
+ * DESCRIPTION: The use of Boolean literals as the identifier (with backtick) in the class.
+ * NOTE: this test data is generated by FeatureInteractionTestDataGenerator. DO NOT MODIFY CODE MANUALLY
+ * UNEXPECTED BEHAVIOUR
+ * ISSUES: KT-26947
+ */
+
+val map = mapOf("x" to null)
+
+fun box(): String {
+    try {
+        val x: Int by mapOf("x" to null)
+    } catch (e: KotlinNullPointerException) {
+        return "OK"
+    } catch (e: NullPointerException) {
+        return "OK"
+    }
+    try {
+        val x: Any by map
+    } catch (e: KotlinNullPointerException) {
+        return "OK"
+    } catch (e: NullPointerException) {
+        return "OK"
+    }
+    return "Error"
+}