* Added support for Multi-GPU inference to DPR including benchmark
* fixed multi gpu
* added batch size to benchmark to better reflect multi gpu capabilities
* remove unnecessary entry in config.json
* fixed typos
* fixed config name
* update benchmark to use DEVICES constant
* changed multi gpu parameters and updated docstring
* adds silent fallback on cpu
* update doc string, warning and config
Co-authored-by: Michel Bartels <kontakt@michelbartels.com>
Co-authored-by: Malte Pietsch <malte.pietsch@deepset.ai>