Add `psutil` and `ipython` to requirements.txt (#7998)

* Add `psutil` and `ipython` to requirements.txt

Lightweight packages used by YOLOv5 for system utilization (psutil) and interactive notebooks (IPython)

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* sort alphabetically

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

requirements.txt

@@ -31,7 +31,9 @@ seaborn>=0.11.0
 # openvino-dev  # OpenVINO export
 
 # Extras --------------------------------------
+ipython  # interactive notebook
+psutil  # system utilization
+thop  # FLOPs computation
 # albumentations>=1.0.3
 # pycocotools>=2.0  # COCO mAP
 # roboflow
-thop  # FLOPs computation