feat: Add universal-darwin-macos build target, closes #3317

[betamos]

See #3317.

This is my first PR so I may have missed something (despite the checklist).

Note that external binaries are not addressed yet, see issue for discussion. Also, docs are missing - I'll add those once the approach is approved.

What kind of change does this PR introduce?

• Bugfix
• Feature
• Docs
• New Binding issue #___
• Code style update
• Refactor
• Build-related changes
• Other, please describe:

Does this PR introduce a breaking change?

• Yes, and the changes were approved in issue #___
• No

Checklist

• When resolving issues, they are referenced in the PR's title (e.g fix: remove a typo, closes #___, #___)
• A change file is added if any packages will require a version bump due to this PR per the instructions in the readme.
• I have added a convincing reason for adding this feature, if necessary

Other information

[lucasfernog]

Nice work, I'll fix the merge conflict and test it now.

[lucasfernog]

You only missed the change file and would be good if you had your commits signed too, but this was an amazing PR! Thank you ❤️

[betamos]

Thanks! Note that sidecar still doesn't work with universal but I'll send out another one for that.