能否添加一个接口，支持解析.cdx文件为mol内容

[honestAnt]

Is your feature request related to a problem? Please describe.
添加一个上传文件接口，支持解析上传的.cdx文件内容为mol内容

Describe the solution you'd like
通过管道调用openbabel 命令行，然后输出mol内容

Describe alternatives you've considered
无

Additional context

[Kohulan]

Is your feature request related to a problem? Please describe. Add a file upload interface that supports parsing uploaded .cdx files into MOL content.

Describe the solution you'd like: Pipe the OpenBabel command line and output the MOL content.

Describe alternatives you've considered: None.

Additional context