[CodeCamp2023-509]Add new configuration files for SECOND

[popcornGit]

Motivation

Add new configuration files for SECOND

Modification

Please briefly describe what modification is made in this PR.

Checklist

1. Passed Pre-commit
2. Passed train and test

[CLAassistant]

All committers have signed the CLA.

[Xiangxu-0103]

Hi, thanks for your contribution. We should support new config files under mmdet3d/configs/. Also, please fix lint with pre-commit.

[OpenMMLab-Assistant-004]

Hi @popcornGit,

We'd like to express our appreciation for your valuable contributions to the mmdetection3d. Your efforts have significantly aided in enhancing the project's quality.
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