Use video Media Created metadata for clip dates (with fallback to upload date)#4223

Currently, imported clips and screenshots use file modification dates locally, and force everything onto Medal Cloud under the upload date. This completely breaks chronological sorting when viewing your cloud library on other devices or the mobile app.

Since Medal’s cloud backend already preserves the internal Media Created / QuickTime:CreateDate metadata inside uploaded MP4 containers, Medal could parse this metadata for imported files:

• Primary (Videos & Screenshots): Set the item’s timestamp using internal Media Created (videos) or Date Taken / DateTimeOriginal (screenshots) metadata if present.
• Fallback: If no embedded metadata exists, fall back to the current upload/file date system.

Why this matters:

• Non-destructive & Zero-risk: Standard live highlights won’t change at all (capture date = upload date).
• Fixes Cloud Libraries: Users migrating old clip archives (PS5, Xbox, old drives) won’t have their entire history smashed into a single “Uploaded Today” bucket on their profile or secondary devices.
• Retroactive Potential: Because the original metadata is already sitting in the uploaded files on Medal’s servers, this could fix existing cloud libraries without forcing users to re-upload everything.