Document ArtifactBundleIndex usage for binary dependencies#9544

Viditgupta-official wants to merge 2 commits intoswiftlang:mainswiftlang/swift-package-manager:mainfrom

Viditgupta-official:artifactbundleindex-docsViditgupta-official/swift-package-manager:artifactbundleindex-docsCopy head branch name to clipboard