/art: use ArtSwitcher

[kevinlul]

Move

https://github.com/DawnbrandBots/bastion-bot/blob/ddccdbbff6de664c8a10537895b35d0d440fc14c/src/commands/rush-duel.ts#L426-L541

to its own file and reuse for /art to match /rush-duel art.

Considerations:

• logger scope should not be specific to /rush-duel
• some cards have illustration specified (example) and this should take precedence over the scan if of sufficient quality. How can this be determined? VG illustrations are always appropriate, but in the example, it's a social media release with a watermark
• all variant artwork are enumerated in https://yugipedia.com/wiki/Artwork
• all regionally-modified artwork, as distinct from variant artwork, are enumerated in https://yugipedia.com/wiki/List_of_modified_card_artworks

[kevinlul]

Cannot have video game artwork replace the first illustration. Both Blue-Eyes White Dragon and Blazing Cartesia fail this. Maybe just use the illustration?