Include Orientation in Study API

[LandonSchropp]

When querying the study API, it'd be nice if the board's orientation could be included. For example, if I fetch the following study:

curl https://lichess.org/study/mbl0anSj/HasNlTst.pgn

Then there's no way to tell that the board is oriented towards black in the PGN headers.

[Event "Albin Countergambit: Albin Countergambit"]
[Site "https://lichess.org/study/mbl0anSj/HasNlTst"]
[Result "*"]
[UTCDate "2022.10.27"]
[UTCTime "02:37:32"]
[Variant "Standard"]
[ECO "D08"]
[Opening "Queen's Gambit Declined: Albin Countergambit, Lasker Trap"]
[Annotator "https://lichess.org/@/ChesserciseXYZ"]

Thank you for the wonderful site!

[ghost]

The study is exported as PGN. Unfortunately, PGN itself does not know such a tag.

[ornicar]

documented on https://lichess.org/api#tag/Studies/operation/studyExportAllPgn

[ghost]

documented on https://lichess.org/api#tag/Studies/operation/studyExportAllPgn

It's nice that you've already implemented that.

[LandonSchropp]

Thanks!