feat: Add Bitsandbytes quantization for transformer backend enhancement #1775 and fix: Transformer backend error on CUDA #1774 (#1823)

* fixes #1775 and #1774

Add BitsAndBytes Quantization and fixes embedding on CUDA devices

* Manage 4bit and 8 bit quantization

Manage different BitsAndBytes options with the quantization: parameter in yaml

* fix compilation errors on non CUDA environment

backend/python/common-env/transformers/transformers-nvidia.yml

@@ -30,6 +30,7 @@ dependencies:
       - async-timeout==4.0.3
       - attrs==23.1.0
       - bark==0.1.5
+      - bitsandbytes==0.43.0
       - boto3==1.28.61
       - botocore==1.31.61
       - certifi==2023.7.22