Integrating Github Actions for Kotlin Multiplatform

With Kotlin Multiplatform (KMP) it’s possible to build artifacts for multiple platforms using the same toolchain, but until portable artifacts for KMP are released you need to build platform artifacts on their respective platforms. With SqlDelight 1.2.2 we now also deploy Windows (mingW) artifacts, meaning it’s impossible to publish from a single OS (since we also support macOS targets). There was no simple setup with Travis and Github Actions is the new hot stuff so we gave that a go and here’s how it works: