Use GitHub Actions for builds

[PeyTy]

Is your feature request related to a Tofita kernel specifically? Please describe

Do it ASAP

Describe the solution you'd like

This should work the same way as AppVeyor does for now

Describe alternatives you've considered

No response

Describe the possible impacts for the developers and users

Better GitHub integration

Additional context

No response

Agreements

• [X] I agree to follow this project's Contributing Guidelines
• [X] I agree to follow this project's Code of Conduct

[acidicMercury8]

@PeyTy this issue can already be closed, because the pipelines are synchronized and allow to conveniently generate ISO images