Add flags to flair

[augustelalande]

As title states, make flag emojis available as flairs. This is useful when using flairs with studies to easily identify the study subject. E.g. Italian flag for Italian opening study.

[SergioGlorias]

I'll leave a note: I doubt it will be approved, especially since the goal isn't to add flags to the flairs.
Unless it is limited to specific areas.

[augustelalande]

Ya I realize the flair logic is shared between users and studies. And users already have flags, so it's a bit redundant. But my main point here is that flags would be useful flairs for studies.

[SergioGlorias]

In the code, it should be possible to implement a filter (like Lichess flair) and configure it so it only appears in studies.

[augustelalande]

Ya that's a possibility. I'll wait to get more feedback before I dive into that.

[ornicar]

I'll agree to it, but only if we limit the flag selection to countries that actually have an opening named after them.

The list of openings is available on https://lichess.org/opening/tree and https://github.com/lichess-org/chess-openings. Same data, different presentation.