K2 Scripting: restore some codegen scripting tests for K2

compiler/testData/codegen/box/script/scriptPropFromAnotherModuleK2.kt

@@ -0,0 +1,28 @@
+// TARGET_BACKEND: JVM_IR
+// IGNORE_BACKEND_K1: JS_IR, JS_IR_ES6
+// IGNORE_LIGHT_ANALYSIS
+// !LANGUAGE: -SkipStandaloneScriptsInSourceRoots
+// WITH_STDLIB
+
+// Although this test works in K1 just fine, it is named with the suffix K2 to show that the demonstrated method is the only one
+// available so far to call a script from another module.
+// In K1 one can do it directly, but this is not the functionality we want to retain
+
+// MODULE: lib
+// FILE: script.kts
+
+fun ok() = "OK"
+
+// MODULE: main(lib)
+// FILE: test.kt
+
+fun runScriptMethod(name: String, method: String): Any {
+    val klass = Thread.currentThread().contextClassLoader.loadClass(name)
+    val constructor = klass.constructors.single()
+    val instance = constructor.newInstance(emptyArray<String>())
+    val method = klass.getMethod(method)
+    return method.invoke(instance)
+}
+
+fun box(): String =
+    runScriptMethod("Script", "ok") as String