Support for Lucene 9 (+ upgrade other dependencies)

[cavorite]

There are newer versions of Lucene with many new features, notably the ones introduced in the 9.X releases.

Given that there the 2 major versions (8.X and 9.X) have different JDK requirements, it would be good to support both in Clue. For instance, we can follow the 2 branch pattern from the Lucene repository itself, where the main branch tracks the most recent release and the 8 branch keeps compatibility for that specific version.

I've started to implement those changes in a fork:

https://github.com/cavorite/clue

I'd like to keep working on it and add new features. For example, using config files for the field types and analyzers used, as well as special commands for other types of queries and fields (such as kNN for vectors, and completion mode for the 'suggest' fields). I would make those changes into my fork for now, but it would be good to contribute them to the main project as well.

Let me know if you're OK with this idea and if you have suggestions for contributing back to Clue.