Implement an API to generate a JWT for downloading multiple files from storage-proxy

[nowgnuesLee]

Motivation  

• Currently, even though there are many files, only one file can be downloaded at a time. For convenience, it seems necessary to implement a feature that allows multiple files to be downloaded at once.

Required Features

• Develop a function to generate a JWT using an array of file paths, a ZIP file name, and a format

Impact  

• I will add a handler in storage/api/manager.py to generate a JWT for downloading multiple files.

Testing Scenarios  

• Test if multiple files (files + folders) are returned in a JWT..