Dai Sugimori

Hi @mikemccand and @kojisekig, thank you for your reviews. I updated some codes along with the comments and add lines to module-info and resources to make `gradle check` green.

I did refactoring to apply a same kind of enhancement to Katakana filter as well.

> Looks great @daixque -- would you like to add a `lucene/CHANGES.txt` entry dscribing this awesome new capability? Be sure to put it under the `9.10.0` section since we can...

@mikemccand @dungba88 Let me ping. Do I still have anything to do for this PR? If not, could you merge it or let me know when will it be merged?