[Feature]: USE OUTPUT_TEMPLATE for file name in download queue

Prerequisites

• I have searched existing issues and discussions to ensure this feature hasn't been requested before
• I have read the feature request guidelines in the README
• I understand that MeTube development relies on community contributions and the maintainer is not likely to implement this feature
• I have considered if this feature should be implemented in yt-dlp instead of MeTube (if so, please report to yt-dlp repository)

Feature Description

I have metube monitoring several channels subscriptions. For my use case, I have some set to auto-download, but most go into the queue for manual review before download (or deletion).

This mostly works great, but because I have multiple videos pending, some from channels covering similar content, it's hard to quickly identify which video is from which channel, which often feeds into my decision to download or delete.

metube provides OUTPUT_TEMPLATE to set the output filename. I set it to "%(channel)s - %(title)s.%(ext)s" to prefix my downloaded videos with the channel name, and this perfectly solves the problem for downloaded videos.

My request is to also use OUTPUT_TEMPLATE as the name for the videos pending download. This would make the pending videos easier to parse at a glance, and logically, to me at least, makes more sense than just using the default name as now you'll have the pending name match the final output.

Implementation Plan

Maybe, I'd like to discuss the implementation approach first

Additional Context

No response