* enable tokenizer on json fields
enable tokenizer on json fields for type text
* Avoid making the tokenizer within the TextAnalyzer pub(crate)
* Moving BoxableTokenizer to tantivy.
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Co-authored-by: Paul Masurel <paul@quickwit.io>
closes#1766
Finding tantivy tokenizers is a frustrating experience currently, since
they need be updated for each tantivy version. That's unnecessary since
the API is rather stable anyway.