Fandom integration

To better demonstrate custom store front, I would like to see waifu collections to have highlights on fandom.deno.dev, can add custom domain, fandom.kodadot.xyz I guess

inspiration cfw.market where they highlight 4 collections

_by @yangwao in https://github.com/kodadot/nft-gallery/issues/5417_

To implement it app should be able to set:
- [] list of collections to be visible on index.tsx
- [] have separated route for each collection

Start with index.tsx and trace the existing collection and routing entry points. Define how the index selects the visible collections and how each collection receives its own route, using the fandom.deno.dev storefront and cfw.market example as context. Done means the configured collections are highlighted on the index and each has a separate accessible route.

Written by the indexing model from the issue text.