[data ops] data simulator

[vincentt1999]

support tiny3d.lidar_simulator(data_path, expanding_method_name)

• Rainy Day
• Snow Day
• Foggy Day

[vincentt1999]

• rainy: https://arxiv.org/abs/2107.07004
• fog: https://openaccess.thecvf.com/content/ICCV2021/html/Hahner_Fog_Simulation_on_Real_LiDAR_Point_Clouds_for_3D_Object_ICCV_2021_paper.html
• snow: https://arxiv.org/abs/2203.15118