iOS support

[Clafou]

It would be great to be able to embed Bun in an iOS app.

JavaScriptCore is available in iOS, but it is very limited without IO and modules such as net, fs etc.

[theolampert]

@Clafou I attempted to expose some more APIs to JSC via briding to Swift and Apple frameworks here https://github.com/theolampert/ECMASwift with varying results, the implementation isn't complete. Ideally, either Bun supporting iOS or a project that makes it simple to expose some more of WebCore's APIs to JSC as Bun does would be really useful.