Embed sponsor.cat sponsors to websites

Help creators display their sponsors on their websites with ease.
Similar to: https://github.com/antfu/sponsorkit
It can be a PR to this repo, or another opensource project

## References
- sponsor.cat GraphQL API: https://thegraph.com/hosted-service/subgraph/timqian/sponsorcat
- API sample query: https://github.com/timqian/sponsor.cat/blob/main/hooks/useUser.js#L17

