Like "code generator IDE plugins".
There are hundreds of them for just about every IDE you can think of.
I can't tell if this is a serious question or not, but metaprogramming/generators are decades old concepts that have been common features of basically every IDE since the 90s.
That’s not what we’re talking about, though. That’s mechanical transformation, and isn’t the same thing as code that’s generated on demand from scratch, based on plain-language intent.
Surely you know the difference, right? I assume you’ve used LLMs to generate code by now?