Adding keyboard shortcuts for red and yellow arrows without right click dragging

[chessavidplayer]

Hello! First of all, big thanks for making this program. I am a big fan of every decent open source chess program, so I truly appreciate your efforts. A suggestion: many chess players use laptops and don't use mouses regularly, touchpad only. Maybe I miss something, but currently it's impossible to draw yellow and red arrows by touchpad only (as some laptops use two fingers touch for a right click what is pointless for dragging and right bottom part of touchpad doesn't work for dragging as well). A suggestion: maybe it makes more sense to create keyboard shortcuts for drawing arrows which one will use COLOR SHORTCUT+LEFT CLICK only, leaving right click without dragging for drawing circles only? (actually, that's how CHESSBASE does it). Of course, it's just a suggestion, as it's not a bug or something, but it still looks kind of improvement to me. Thanks in advance!

[franciscoBSalgueiro]

En Croissant uses Chessground for the board so the methods for inputting arrows are exactly the same as Lichess. A change like you're suggesting would have to be done in that library.