GitLab

* Add translation to fitst 3 file of internal folder

* Update Toctree.md and add files

* Update docs/source/ja/internal/generation_utils
Co-authored-by: Steven Liu <59462357+stevhliu@users.noreply.github.com>

* Rename generation_utils file

* rename pipelines_utils.md

* Change file names

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Co-authored-by: Steven Liu <59462357+stevhliu@users.noreply.github.com>