Add ArrayConverter

[nsd0mnawabee]

No description provided.

[jdreesen]

Could you please elaborate on why we need this and how it is used?

[mike4git]

He had the situation where a Populator needed a way to convert an array of objects and assign it to a certain target property.
But therefore he could have written:

class MyPopulator implements Populator 
{
   ...
   public function populate(object $target, object $source, object|null $ctx): void
   {
      ...
      $parts = $source->getParts();
      $target->targetParts = $this->partConverter->convert(new ArrayObject($parts), $ctx);
   }
}

And then there is no need for an ArrayConverter.

So, PR can be closed afaik.

[mike4git]

Alternative solution has been found.