### What this PR does / why we need it? Add `apply_grammar_bitmask()` method to model runner. This method is necessary for `xgrammar` structured output. --------- Signed-off-by: shen-shanshan <467638484@qq.com>
### What this PR does / why we need it? Add `apply_grammar_bitmask()` method to model runner. This method is necessary for `xgrammar` structured output. --------- Signed-off-by: shen-shanshan <467638484@qq.com>