Enable Uploading Voters to Feedback Suggestions

Description: As a user of Sleekplan’s feedback management system, I want the ability to upload voters' lists for each feedback item, so I can streamline voter attribution instead of doing it manually. Problem: Currently, there doesn’t seem to be a feature to upload voters directly to feedback items, which can be limiting for teams managing substantial feedback or requiring specific attribution. Benefit: This enhancement would save time while maintaining accuracy and improve user experience by simplifying voter management for feedback items.