use nms in the model itself, simplify and make postprocess faster.

make inference in batches, fix c# handling, add overlap handling

Azaion.Common/Services/AnnotationService.cs

@@ -105,9 +105,6 @@ public class AnnotationService : INotificationHandler<AnnotationsDeletedEvent>
     public async Task<Annotation> SaveAnnotation(AnnotationImage a, CancellationToken cancellationToken = default)
     {
         a.Time = TimeSpan.FromMilliseconds(a.Milliseconds);
-        a.Name = a.OriginalMediaName.ToTimeName(a.Time);
-        foreach (var det in a.Detections)
-            det.AnnotationName = a.Name;
         return await SaveAnnotationInner(DateTime.Now, a.OriginalMediaName, a.Time, ".jpg", a.Detections.ToList(),
             a.Source, new MemoryStream(a.Image), a.CreatedRole, a.CreatedEmail, generateThumbnail: true, cancellationToken);
     }