Feature Request: Add audio for chess moves

[Pbatch]

Add audio from when moves are update in the PGN. This will help with:

• Detecting illegal moves.
• Accessibility (blind players?!).
• Future app developments (playing a Lichess game on a real-life board).

[fqhd]

I'd like to be assigned this issue. Here are my proposed ideas for this:

• TTS the move played by the opponent when playing games on lichess. The move will be a short phrase such has "Knight f3" or "Queen takes h4 check".
• Add audio feedback for if an illegal move has been detected played on the board. There will be no audio feedback for if a legal move has been played as I think that would just be annoying and doesn't provide any practical usage.

[Pbatch]

I think Lichess have already got us covered with the TTS

In terms of illegal moves, I don't know the easiest way to get started. Perhaps forking chess.js, and adding a pseudo-legal move function is the way to go...

[XZhu201]

Hi, this is a very nice App, thank you! Regarding illegal move, I guest this may also include this case: I failed to hear the audio for the opponent's move clearly and/or make the wrong move on the real chess board. If I don't look at the screen, I may never know. Then, a warning by the audio may be very helpful :)