Add probabilistic line extraction

I see circle fitting and rectangle fitting. It would be helpful to include probabilistic line extraction to detect walls in indoor environments. There are several implementations written in MATLAB here: https://github.com/acschaefer/ple

首先查看仓库中现有的圆拟合和矩形拟合实现，然后将其结构与链接的 MATLAB 概率线提取实现进行比较。当 Python 实现能够以概率方式提取适合检测室内环境中墙壁的线时，工作即告完成；该 issue 未指定要运行的文件或测试。

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