Since I'm new to how the licenses directory should look like: I just mapped the dependency licenses for the morfologik-* jars to the Lucene NOTICE and LICENSE file since they seem to include the sections for the morfologik project. Hopre this is okay. After reading the original issue in https://issues.apache.org/jira/browse/LUCENE-7287 I also wasn't sure if the dictionary included in lucene-analyzers-morfologik has it's own license that we need to copy over or if the Lucene license and notice files cover that.
I don't think it makes a big difference which package the stuff is in but for a plugin of this size I'd just put it all in one package. And I'd try not to clash with a package in core. Though I don't think it is big deal either way.
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