Downloading with Psych-DS structure for frontend web tool

[vzhang03]

When using the CLI prompting tool you are able to have the tool copy over the data files and create the entire Psych-DS project directory. This is very convenient and helps speed up the process.

A perfect solution would be to handle this on the frontend web interface, but it is difficult to work with the directory structure. Additionally, a backend where we pass the data files to a server just to create a simple directory seems inelegant.

For now, it may be best to prompt the user to create the directory structure but because we are already reading files from the directory anyways eventually would be good for this to be built-in with the web tool.