tests: Add a test for list sorting

backend.native/tests/runtime/collections/sort1.kt

@@ -0,0 +1,9 @@
+fun main(a: Array<String>) {
+    val foo = mutableListOf("x", "a", "b")
+    foo.sort()
+    println(foo.toString())
+
+    var bar = mutableListOf(239, 42, -1, 100500, 0)
+    bar.sort()
+    println(bar.toString())
+}