Feature Request: Consider empty string IDs null

[Earthmark]

In rust having a null string requires a few additional layers that negatively impact library useability.

Currently I have a layer that omits empty strings to keep the useability, but I'm realizing I'm not sure there's a good use case for empty string IDs anyways. I imagine other languages may have similar behaviors, it might make sense to just support that in the library itself.

Would it be possible to have ResoLink consider empty strings the same as null? I don't see much of a use case for an empty string ID aside from this particular case of a null sentinel in practice anyways.

[Frooxius]

Added this in 2026.1.16.273!

If you run into any places where this is not respected, make an issue please! Though I think I got them all.

[Earthmark]

Thank you, that really helps reduce the complexity of my structs :D