Add Swift support

[aysilsimgekaracan]

Note

Adds Swift 6.0 language support, including starter/template code, an example solution for stage oo8, a Swift Dockerfile, and course configuration updates.

• Swift language support (Swift 6.0)
  • Add swift-6.0.Dockerfile and build caching for Swift packages.
  • Update course-definition.yml to include swift in languages.
• Starters/Templates
  • Add compiled_starters/swift/ with build/run scripts, Package.swift, README.md, codecrafters.yml, Sources/main.swift (scaffold), and your_program.sh.
  • Add starter_templates/swift/ with code scaffold (Sources/main.swift), Package.swift, .codecrafters scripts, and config.yml.
• Solutions
  • Add solutions/swift/01-oo8/ implementing stage "Print a prompt" (Sources/main.swift prints prompt and reads input), with corresponding .codecrafters scripts, README.md, explanation.md, and diff snippet.

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