Add RTDETR Trainer (#2745)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>
Co-authored-by: Laughing-q <1185102784@qq.com>
Co-authored-by: Kayzwer <68285002+Kayzwer@users.noreply.github.com>
Co-authored-by: Laughing <61612323+Laughing-q@users.noreply.github.com>

docs/reference/yolo/utils/loss.md

@@ -8,6 +8,11 @@ keywords: Ultralytics, YOLO, loss functions, object detection, keypoint detectio
 :::ultralytics.yolo.utils.loss.VarifocalLoss
 <br><br>
 
+# FocalLoss
+---
+:::ultralytics.yolo.utils.loss.FocalLoss
+<br><br>
+
 # BboxLoss
 ---
 :::ultralytics.yolo.utils.loss.BboxLoss

docs/reference/yolo/utils/metrics.md

@@ -3,11 +3,6 @@ description: Explore Ultralytics YOLO's FocalLoss, DetMetrics, PoseMetrics, Clas
 keywords: YOLOv5, metrics, losses, confusion matrix, detection metrics, pose metrics, classification metrics, intersection over area, intersection over union, keypoint intersection over union, average precision, per class average precision, Ultralytics Docs
 ---
 
-# FocalLoss
----
-:::ultralytics.yolo.utils.metrics.FocalLoss
-<br><br>
-
 # ConfusionMatrix
 ---
 :::ultralytics.yolo.utils.metrics.ConfusionMatrix