support ngram and fst hotword for 2pass-offline (#1205)

Yabin Li

2023-12-26 b8825902d93d5017e44828316062dc8306b7ddcd

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<?xml version="1.0" encoding="UTF-8"?>
<Bucket
   uuid = "A434E096-73C6-4C03-86F5-FAA8A72D79B0"
   type = "1"
   version = "2.0">
</Bucket>