Add data persistent support (a shared cloud drive that can be mounted in runtime containers).

[lihebi]

• A cloud disk to mount into the runtime containers
• File upload and download

[senwang86]

File upload and download

• #343 for exporting repo as a Jupyter notebook
• #369, #374 for importing Jupyter notebook and Python script.

[lihebi]

This issue concerns the storage inside the runtime container. This storage for CodePod is like Google Drive for Colab: Colab can mount Google Drive so that users can access their GDrive data files programmatically.

[senwang86]

Oh, makes sense. I recalled that one of my friends mentioned that a "strong" reason to use Colab is because of the GDrive support.

[forrestbao]

File upload and download

• [UI] Jupyter Notebook export in Frontend #343 for exporting repo as a Jupyter notebook
• [UI] Import Jupyter notebook  #369, [UI] Allow importing the Python script #374 for importing Jupyter notebook and Python script.

The three issues above are not about file upload and download. It was referring to the files local to a Codepod repo. Like the files in Google Colab.