Add @@species accessor to Array and Promise builtin objects (#3440)

Fully support @@species and SpeciesConstructor in Array and Promise builtins.
Also added partial support to TypedArrays, but a rework is needed in %TypedArray%.prototype functions' typedarray constructor, which is out of this patch's scope.

JerryScript-DCO-1.0-Signed-off-by: Daniel Balla dballa@inf.u-szeged.hu

jerry-core/ecma/builtin-objects/ecma-builtin-arraybuffer.c

@@ -93,6 +93,18 @@ ecma_builtin_arraybuffer_dispatch_construct (const ecma_value_t *arguments_list_
   return ecma_op_create_arraybuffer_object (arguments_list_p, arguments_list_len);
 } /* ecma_builtin_arraybuffer_dispatch_construct */
 
+/**
+ * 24.1.3.3 get ArrayBuffer [ @@species ] accessor
+ *
+ * @return ecma_value
+ *         returned value must be freed with ecma_free_value
+ */
+ecma_value_t
+ecma_builtin_arraybuffer_species_get (ecma_value_t this_value) /**< This Value */
+{
+  return ecma_copy_value (this_value);
+} /* ecma_builtin_arraybuffer_species_get */
+
 /**
  * @}
  * @}