There isn't one. There is the Fetchling is Bestiary 2. Because the Shade is a Forgotten Realm's specific template it will probably never be released from TSR's copyright to allow Pathfinder to use it.
On the other hand, there's nothing stopping you from simply applying the Shade Template to a Pathfinder character.
Yeah I guess I should've said "something similar to the Shade". Although I was considering using the Shade template as is. The Fetchling will be extremely helpful for my plans, though, thank you for pointing that out.
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On the other hand, there's nothing stopping you from simply applying the Shade Template to a Pathfinder character.