Strongly-typed extended attribute names

[sindresorhus]

It would be useful to be able to define strongly-typed keys that know how to decode/encode the value.

import ExtendedAttributes

extension ExtendedAttributes.Name {
	static let isProtected = Self(
		get: { api in
			try api.getPropertyListSerializedValue("com.apple.rootless", type: Bool.self) ?? false
		},
		set: { api, value, flags in
			try api.setPropertyListSerializedValue("com.apple.rootless", value: value, flags: flags)
		}
	)
}

let fileURL = URL(fileURLWithPath: "/path/to/file")
let isProtected = try? fileURL.extendedAttributes.get(.isProtected)

We could even include some common ones.

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Feedback wanted