[Feature] Automatic scene-based culling: group by time and place, keep the best shots

I have searched the existing feature requests, both open and closed, to make sure this is not a duplicate request. • Yes The feature Add an automatic culling utility that groups photos into scenes and suggests which ones to keep. How it would work: 1. Group assets whose capture times are within a configurable window (e.g. 120s) and, when available, whose GPS coordinates are close (e.g. 200m). 2. Score each asset in a scene using signals Immich already has or can compute cheaply: preview sharpness, detected face area, exposure, resolution. 3. Suggest keeping the top K per scene (e.g. 3 for small scenes, 10% capped at 10 for large ones), and mark the rest for trash. 4. Review UI under Utilities: a per-scene grid with keep/trash suggestions, adjustable per photo, plus a one-click apply. 5. Everything goes to trash — never permanent deletion. Why the existing duplicate detection is not enough • It compares CLIP embeddings with maxDistance capped at 0.1. Burst frames wit…