feat: allow providing custom names to the message

[altryne]

Per OpenAi cookbook it's possible to give messages custom names, and those are somehow accessible to the model?

Would be great if naming nodes can be reflected in the UI (similar to #8 ) but if it's visible to the models, not sure I'd suggest to do it the other way around (ie, user replaces the node name for visual convinience #8 it shouldn't affect his evaluations )

[transmissions11]

hmmm personally when i played around w/ the names functionality i didn't find it very useful— and at least atm i think adding it to flux would be more of a UX confusion point than benefit, but i might reconsider with time or a strong counter example

[transmissions11]

gonna close as not planned for now just to keep things tidy