feat: add custom unique filename when download as zip

[lassecapel]

Description

This pull request introduces a new functionality that enhances the user experience when downloading ZIP files. When a user clicks the "Download ZIP" button, a prompt is displayed to allow the user to edit the filename before proceeding with the download. By default, the filename is pre-filled with a unique project name that includes a hash, ensuring uniqueness.

Key Features

Pre-filled Default Filename:

• The filename includes a unique project name (e.g., ProjectName-.zip).
• The hash is generated to ensure the file name remains distinct for each project.

[wonderwhy-er]

I am not sure I like that prompt part, person can rename later, I don't want to confirm saving file each time.

[lassecapel]

@wonderwhy-er I'm happy to adjust the functionality to always have a more descriptive filename without a prompt if that fits better within the application.

Edit: updated the code to always use the project description as filename with a unique hash attached

[wonderwhy-er]

Tested, looks and works good