[Bug]: ModuleNotFoundError: No module named 'optimum.bettertransformer' when running v2 CLI

### System Info **Environment:** - **OS**: Windows 11 - **Python Version**: 3.12 (Anaconda) - **Library Version**: infinity-emb[all] (Latest) - **Installation Command**: pip install infinity-emb[all] ### Information - [ ] Docker + cli - [x] pip + cli - [ ] pip + usage of Python interface ### Tasks - [x] An officially supported CLI command - [ ] My own modifications ### Reproduction **Description:** I am encountering a `ModuleNotFoundError` when trying to run the `infinity_emb v2 --help` command on Windows, even after installing with the `[all]` extra. **Steps to Reproduce:** 1. Create a new conda/python environment. 2. Run `pip install "infinity-emb[all]"`. 3. Run `infinity_emb v2 --help`. **Error Traceback:** ```text Traceback (most recent call last): ... File "...\infinity_emb\transformer\classifier\torch.py", line 8, in <module> from infinity_emb.transformer.acceleration import ( File "...\infinity_emb\transformer\acceleration.py", line 11, in <module> from optimum.bettertransformer import ( # type: ignore[import-untyped] ModuleNotFoundError: No module named 'optimum.bettertransformer' ``` **Additional Context:** It seems that `optimum` is installed, but `optimum.bettertransformer` is either not found or not correctly bundled in the Windows installation of the dependency tree. Manually installing `optimum` does not seem to resolve the specific import error within `acceleration.py`.