Fixes for SwiftPM-backed artifacts: skip __MACOSX bundles and stream resolve output

The bundled SwifterPM is bumped to 0.8.12, fixing two issues in the SwiftPM-backed install and generate path. Binary artifacts distributed as Finder zips (for example Plaid’s LinkKit xcframework) no longer fail with “…doesn’t contain an Info.plist”, because the __MACOSX AppleDouble shadow bundles are now stripped during extraction and skipped by the artifact scanner. Delegated swift package resolve runs also stream stdout and stderr through to the terminal, so resolution shows real progress instead of appearing stalled.