Objective-C interop doc updates

[liamappelbe]

Update The Objective-C interop documentation to use the new FFIgen config Dart API, instead of YAML configs. I haven't updated the Swift example, because that will soon be replaced by swiftgen.

Fixes dart-lang/native#2710

[dart-github-bot]

Visit the preview URL for this PR (updated for commit 5373249):

https://dart-dev--pr6942-objc-update-qqxo4l1b.web.app

[parlough]

I believe the failure was from a version of Jaspr that had a regression. I updated the branch with main which should pull in the release with a fix.

I'm guessing swift isn't a supported language for the syntax highlighting? It works when I change the language to dart, but obviously that's not a viable solution. Any suggestions? Is there a list of supported languages somewhere?

You're right, Swift isn't supported yet, but if swift is specified, it should fall back to no syntax highlighting. The list of supported languages can be found in site/lib/src/extensions/code_block_processor.dart.

I'm planning to work on basic support for Swift soon, is the no highlighting fallback sufficient until I can finish that?

[liamappelbe]

I'm planning to work on basic support for Swift soon, is the no highlighting fallback sufficient until I can finish that?

Yep, no hilighting is fine for now.

[liamappelbe]

@parlough This is ready for review. PTAL