Make zipping of file download optional

[FelixKirsch]

Is your feature request related to a problem? Please describe.
Currently, all downloads are provided as zip files, but in some cases downloading a zip file is not wanted.

Describe the solution you'd like
Add a "zip this" option to enable users to zip the file if they want to or download it unzipped otherwise.

Describe alternatives you've considered
Stay with the current version and unzip after every download locally.

Additional context
Test Findings v1.5.0