Better Upload exceptions in Uploader.php

[sicet7]

Description (*)

This pull request simply adds more exceptions messages to the uploader. The exception messages is copied from: https://www.php.net/manual/en/features.file-upload.errors.php#115746

Contribution checklist (*)

• [x] Pull request has a meaningful description of its purpose
• [x] All commits are accompanied by meaningful commit messages
• [x] All automated tests passed successfully (all builds are green)