Create swift.yml

[art-divin]

Description

This MR adds two GitHub Actions:

1. ubuntu-latest
2. macos-latest

In this MR, linux and macos actions are disabled, and will be enabled along with #1188 once it would be merged.

Notes

• macos-latest uses Xcode provided by GitHub actions, at this moment the version is 12.4.
• tests run by macos-latest are failing in this MR due to missing changes from Linux Support #1188 , where swift test works.

[art-divin]

👋🏻
For the record, I have really tried to setup macOS swift compilation on GH actions without Xcode, to no avail. I hit stdio.h file not found error whenever bundle install was run on macOS runner. This is due to missing command line tools, and I could not get around this, invested 6+ hours for research. Any hints how to make macOS runner work Xcode-less, please leave a hint 👍🏻