Request to add the files of demos of samjs website to repository

[AdityaSarwade]

Hi, @yzg1025 @yzg1025, I am building an application to use SAM and I came across your package. It is really useful and has been of great help.

Since documentation is not available for your module can you please upload the code for your website demo page either in this repository or a new repository.

That would be much appreciated thank you.

[lzxue]

https://github.com/antvis/SAMJS/tree/main/docs the demos