ERC721K zero dependencies for off-chain data

"ERC721K is an ERC721 implementation with zero dependencies for off-chain data.

Both the token image and token traits are generated entirely on-chain.

"However, instead of the smart contract logic deployed in a specific NFT instance, the underlying system has been modularized, to enable composition of SVGModules across many different instances. NFTs can share SVGModules which encapsulate both rendering and data fetching logic."- Kames