Replace Scryfall's API with custom API using Scryfall data

[Eradev]

We've seen increased reports of throttling by Scryfall recently.

This replaces Scryfall's API with my own which uses Scryfall's bulk data to generate a lookup table to their CDN.

• Bypass Scryfall's API for lookup (Only refreshes the DB once per day at around 2:00 AM EST);
• Cloudflare-cached for speed;
• Only implements /cards/named and /cards/{set}/{num};
• Only return images.

I can give access to the repo if maintainers want access.