Replace forked copy/pasted classes with dependency to ipld/java-ipld-cbor

[vorburger]

While poking around and learning a bit more about what's what here, I noticed that what's (currently) here appears to be the same as this?

Perhaps we could replace forked copy/pasted classes with a dependency to ipld/java-ipld-cbor.

@ianopolous would this make sense?

[vorburger]

@ianopolous or should this be the other way around - is the code in this repo the latest? In that case, do you want to Archive https://github.com/ipld/java-ipld-cbor? Or the other way - add a dependency?