GitLab

* add stack sa model ops

* fix lint

* fix lint

* fix comments

* fix bug

* fix lint

* fix comments

* fix lint

* fix lint

* fix

* [Enhance] Add type hints in /ops:
`fused_bias_leakyrelu.py`, 'gather_points.py`, `group_points.py`.
There is no need to add type hints in `furthest_point_sample.py` and
`info.py`.
As for `focal_loss.py`, please see #1994.

* Modidied the default value of a variable.

* [Enhance] Add type hints in:
`knn.py`, `masked_conv.py`, `merge_cells.py`, `min_area_polygons.py`,
`modulated_deform_conv.py`, multi_scale_deform_attn.py`.

* Fix typehint.

* Fixed typehint.

* remove type hints of symbolic

* add no_type_check to ignore mypy check for method
Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>

* [Docs] Fix the format of docstring

* fix format

* [Docs] Fix the format of return

* replace List with list

* format the documentation of optimizer

* Update ops docstring (#2

)

* update ops docstring

* fix typos
Co-authored-by: ChaimZhu <zhuchenming@pjlab.org.cn>
Co-authored-by: ChaimZhu <zhuchenming@pjlab.org.cn>

* add op (group points) and its related ops (ball query and knn) in mmdet3d

* refactor code

* fix typo

* refactor code

* fix typo

* refactor code

* make input contiguous
Co-authored-by: zhouzaida <zhouzaida@163.com>