GitLab

* Fix index.rst for zh docs

* Change switch language

* [Doc] Add tutorials/data_pipeline Chinese version

* refine doc

* Use the absolute link

* Use the absolute link
Co-authored-by: Tai-Wang <tab_wang@outlook.com>

* Part of the zh doc

* Complete the rest

* Fix typos

* Revert

* Fix comments

* replace IndoorPointSample to PointSample

* add comments for PointSample transform

* fix bug when far points > num_sample

* refine format

* add unit test

* minor fix

* minor fix

* [Doc] Add tutorials/customize_dataset.md

* refine doc

* add tutorial.config chinese doc

* minor fix

* refine format

* fix typos

* Chinese document structure alignment

* fix typos in compatibility.md

* add chinese doc

* update