tests: Copy stdlib tests from Kotlin/JVM

This patch copies Kotlin/JVM stdlib tests (libraries/stdlib/test)
excepting ones with explicit java dependencies. It also transforms
the tests to use them as box-tests.

backend.native/tests/external/stdlib/collections/CollectionTest/requireNoNulls.kt

@@ -0,0 +1,15 @@
+import kotlin.test.*
+import kotlin.comparisons.*
+
+fun box() {
+    val data = arrayListOf<String?>("foo", "bar")
+    val notNull = data.requireNoNulls()
+    assertEquals(listOf("foo", "bar"), notNull)
+
+    val hasNulls = listOf("foo", null, "bar")
+
+    assertFailsWith<IllegalArgumentException> {
+        // should throw an exception as we have a null
+        hasNulls.requireNoNulls()
+    }
+}