Feature Request: Add more codec support to cid.js

[SgtPooki]

See https://github.com/ipfs/ipld-explorer-components/pull/330/files#r918530595

• [ ] dag-json support
• [ ] raw support
• [ ] json support
• [ ] js bitcoin support

Examples:

• https://github.com/ipld/js-car/blob/master/examples/verify-car.js#L11-L15

[SgtPooki]

dag-json & raw should be fixed when I resolve #359