Add more tiles

[edderiofer]

As suggested in #118 and #117 (and possibly other issues):

• Poker tiles
• Hanafuda tiles from Hanafuda-pai
• Ponjan tiles (perhaps different varieties?)
• Four Colour Cards (mahjong tiles)
• Other jokers (as variously seen on Chinese Wikipedia)
• Alternative green dragon (發 vs 𤼵)
• Anything else?