backend/tests: Add blackbox tests from Kotlin JVM

Added tests from testData/codegen/box directory. There are blackbox tests
in other directories and they are to be added.

backend.native/tests/external/codegen/blackbox/reflection/noReflectAtRuntime/primitiveJavaClass.kt

@@ -0,0 +1,23 @@
+// TODO: muted automatically, investigate should it be ran for JS or not
+// IGNORE_BACKEND: JS
+
+// WITH_RUNTIME
+
+import kotlin.test.assertEquals
+
+fun check(name: String, c: Class<*>) {
+    assertEquals(name, c.simpleName)
+}
+
+fun box(): String {
+    check("boolean", Boolean::class.java)
+    check("byte", Byte::class.java)
+    check("char", Char::class.java)
+    check("short", Short::class.java)
+    check("int", Int::class.java)
+    check("float", Float::class.java)
+    check("long", Long::class.java)
+    check("double", Double::class.java)
+
+    return "OK"
+}