Migrate boxWithJava tests to multi-file framework

compiler/testData/codegen/boxWithJava/reflection/parametersHaveNoNames.kt

@@ -0,0 +1,18 @@
+// FILE: J.java
+
+public class J {
+    void foo(String s, int i) {}
+
+    static void bar(J j) {}
+}
+
+// FILE: K.kt
+
+import kotlin.test.assertEquals
+
+fun box(): String {
+    assertEquals(listOf(null, null, null), J::foo.parameters.map { it.name })
+    assertEquals(listOf(null), J::bar.parameters.map { it.name })
+
+    return "OK"
+}