xuning / sherpaonnx

…ng directory for CMake (#2033)

We also need to clear _last

See also https://github.com/Xiaobin-Rong/gtcrn

…ee for C.struct_SherpaOnnxOfflineRecognizerConfig ptr (#1976)

Co-authored-by: liyuzhi <liyuzhi@info.easeus.com.cn>

Co-authored-by: jian.chen03 <jian.chen03@transwarp.io>

* adding ebranchformer encoder

* extend surfaced FeatureExtractorConfig

- so ebranchformer feature extraction can be configured from Python
- the GlobCmvn is not needed, as it is a module in the OnnxEncoder

* clean the code

* Integrating remarks from Fangjun

Otherwise, it spends lots of time in the loop if the EOT token
is not predicted.