[_]: feat/generate thumbnails for videos

[xabg2]

Description

Implementation of thumbnail generation for videos when uploading the file or viewing it from the file viewer.

Related Issues

Related Pull Requests

Checklist

• [x] Changes have been tested locally.
• [ ] Unit tests have been written or updated as necessary.
• [ ] The code adheres to the repository's coding standards.
• [ ] Relevant documentation has been added or updated.
• [ ] No new warnings or errors have been introduced.
• [ ] SonarCloud issues have been reviewed and addressed.
• [ ] QA Passed

Testing Process

Additional Notes