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

Yabin Li

2023-12-26 b8825902d93d5017e44828316062dc8306b7ddcd

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isang    1
dalawang    2
tatlong    3
apat na    4
limang    5
anim na    6
pitong    7
walong    8
siyam na    9