alan/roulette v15

Catalog release of alan/roulette (v15), attributed to @BCook98.

path: games/alan/roulette
digest: sha256:6ab3cb3ea485b35956e86f9470e9412144b3306a29ad9e696936fce2ca20b732
preview-digest: sha256:169021415ce76f22344c8be19b71d8ae288a5f05049fc87a5f6a30c3739dd16d

Player characters

Each player's character now renders beside their name in the seat strip under
the table, next to their chip-colour swatch.