cats-uri should abstract all URI frameworks

[bblfish]

It would help to have a URI spec that can abstract between any implementation of URIs, the way that banana-rdf can abstract between any RDF Framework, without needing to create any new objects (using opaque types essentially and Match Types.
Having such a library would allow one to write code that can work in Java, JS, and pure Scala land and native using the libs most appropriate for that platform, and making a switch from one library to the next a simple 1 line code change.

That would allow one to write code that could use any of the following libs:

• java.net.URI
• akka URI
• Http4s URI
• Jena URI
• lemonlabs uri
• JS URI libs
• native URI libs
• sttp.mode.Uri
• ...

The pattern for such an abstraction is demonstrated with the banana-rdl scala3 library:

• org/w3/banana/RDF.scala: allows one to abstract the main RDF types. A URI library would be able to abstract RDF components perhaps.
• and it comes with a Jena implementation
• and will have a pure scala version called plantain I am working on,
• and a version using IBM's rdf4j (which is waiting on the bug fix Unreachable case in TypeTest scala/scala3#18052 which appeared after a fix to issue Problem with Traits not being Matchable scala/scala3#16408)

To see how it is used, please take a look at the tests which are framework independent, such as this one:
https://github.com/bblfish/banana-rdf/blob/scala3/rdf-test-suite/shared/src/main/scala/org/w3/banana/GraphTest.scala

Banana-rdf actually has an initial abstraction for URI too:
rg/w3/banana/operations/URI.scala, to help us write code that can work with URIs across frameworks.

[bblfish]

What would be nice for an RDF framework would be if such an abstraction could allow me to save the URLs in trees of url components that could map two way to Longs so that we can use the longs as substitutes for the URLs and reduce the amount of memory used by strings...