- Added support for Windows and macOS in CI pipelines
- Added missing dependencies for Windows and x86-64-darwin
- Resolved macOS SDK version compatibility for darwin-x86_64
The `mkShell` override was necessary to ensure compatibility with the newer
macOS SDK (version 11.0) for x86_64. The default SDK (10.12) was causing build failures
because of the missing libs and frameworks. OverrideSDK creates a mapping from
the default SDK in all package categories to the requested SDK (11.0).