[iOS]Introduce swift-format · DroidKaigi/conference-app-2023@32abb9a

Header comments should be consistent with project patterns (file_header)

Lines should not have trailing whitespace (trailing_whitespace)

Lines should not have trailing whitespace (trailing_whitespace)

Lines should not have trailing whitespace (trailing_whitespace)

Lines should not have trailing whitespace (trailing_whitespace)

Lines should not have trailing whitespace (trailing_whitespace)

Lines should not have trailing whitespace (trailing_whitespace)

Lines should not have trailing whitespace (trailing_whitespace)

Lines should not have trailing whitespace (trailing_whitespace)

Lines should not have trailing whitespace (trailing_whitespace)

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