Include pockets in the initial json for a featured game.

[johndoknjas]

This, along with lichess-org/lila-ws#795, will give us the means to display pocket info for each side in a featured game.

Another approach is adding a 9th field to the board fen, but I'm unsure how many subscribers there are (both here and for the lila-ws move update socket), and if any depend on the board fen being in the current 8-field format.

[ornicar]

This requires an additional hack on lila-ws.

But what I'm most concerned about is what will follow, mostly the CSS to add pockets do mini-boards.

I don't think the overall maintenance cost, all things considered, of adding adding crazyhouse pocket infos on miniboards, is acceptable.

[johndoknjas]

@ornicar Here's some unpolished frontend code I had for displaying the pockets. I do agree it adds complexity, so whether it's worth it 🤷. I would note though that a crazyhouse position depends heavily on the pockets of each player, so not knowing their contents largely prevents one from following along.

[ornicar]

ugh yeah that's a lot of code to maintain, and I expect more would be needed to bring pockets to all mini-boards, including hairy CSS layout grid hacks and fragile responsive rules