Compile a backend for darwin-aarch64

[Vehmloewff]

Not super urgent because us M1 Mac people can just run the wasm version, but it would be quite nice to have...

[alexgleason]

How do you work around this on a team where people are using different computers? Do I need to try-catch the deno-dom import?

[Vehmloewff]

When possible, I've done dynamic imports inside a condition to check if the platform is M1. I've done other hacks before so that the imports are part of the module graph, but dynamic imports are very well-supported now and I don't think that these hacks are still necessary.