GitLab

* fix bnb documentation

- move bnb documentation to `infer_gpu_many`

* small refactoring

- added text on infer_gpu_one
- added a small note on infer_gpu_many
- added customized multi gpu example on infer_gpu_many

* Update docs/source/en/perf_infer_gpu_many.mdx
Co-authored-by: Stas Bekman <stas00@users.noreply.github.com>

* apply suggestions
Co-authored-by: Stas Bekman <stas00@users.noreply.github.com>

* Apply suggestions from code review
Co-authored-by: Stas Bekman <stas00@users.noreply.github.com>
Co-authored-by: Stas Bekman <stas00@users.noreply.github.com>