[XCBuildSupport] Add SWIFT_SERIALIZE_DEBUGGING_OPTIONS to build settings
[XCBuildSupport] Add SWIFT_SERIALIZE_DEBUGGING_OPTIONS to build settings

apple/swift-package-manager,abertelrud/swift-package-manager,abertelrud/swift-package-manager,abertelrud/swift-package-manager,abertelrud/swift-package-manager,apple/swift-package-manager,apple/swift-package-manager,apple/swift-package-manager,apple/swift-package-manager,abertelrud/swift-package-manager