Help: explain portability of an extension

Hey there! I am working on https://github.com/NickCrews/libpostal-duckdb

I have a question for distributing in regards to how portable an extension file is. If I build an extension for
- x86
- macOS
- duckdb 0.9.2

Is that going to work on Windows x86 machine using duckdb 0.9.2? Or do I need to publish a built version for every combo of (arch, OS, duckdb version)?

The reason I ask is because I am trying to incorporate [libpostal](https://github.com/openvenues/libpostal) as a dependency. It isn't on vcpkg. So I started with git submodules. But then I found [an unofficial homebrew recipe](https://github.com/robsalasco/homebrew-libpostal) that would be much easier, but it would limit the built to working on linux and macos. So if I need to build on windows, that is a nonstarter.

I figured that once we have this figured out I can submit a PR that clarifies this in the README, as a C NOOB this would have helped me. Thank you!