Resolve "Extend API for exporting a project with option to overwrite project description"
What does this MR do?
Adds the option to override the description of a project on export, via the API
Does this MR meet the acceptance criteria?
- Changelog entry added, if necessary
- Documentation created/updated
- API support added
- Tests added for this feature/bug
- Has been reviewed by Backend
- Conform by the merge request performance guides
- Conform by the style guides
- Squashed related commits together