`multibase:` URL scheme (like data:)

[vorburger]

It occured to me that it could be neat to agree upon a multibase: URL scheme.

It would basically work just like those data: URLs (see e.g. MDN or Wikipedia).

Just for fun, I have actually implemented this in the "URL resolver" of a tool of mine, see https://docs.enola.dev/use/fetch/#multibase. It even supports including a ?mediaType=text/markdown or ?charset=iso-8859-1; which the data: RFC 2397 does not, but it seems useful to be able to specify it.

Is there any interest from anyone else in this? Next step? I could write it up as "formal spec" (?), e.g. here.