Introduce `FSEventStreamCreateOptions` to avoid a slew of .ctor overrides, and make it easier to specify `DeviceToWatch` and `SinceWhenId`. `SinceWhenId` was previously only exposed on the "low level" .ctor, and it's a rather important parameter for supporting events that may have happened while the application was not running.
Make the existing constructors wrap `FSEventStreamCreateOptions` to avoid API break.
This is a followup to #14318. When using device-relative watches, files can be tracked via a tuple of their device ID and inode instead of paths. #14318 exposes inode data on `FSEvent`.
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