feat: MindNLP兼容Ultralytics库

[kittentruck]

完成 MindSpore NLP 对 Ultralytics 库的兼容适配（#1805）
链接为https://github.com/kittentruck/mindnlp/pull/new/feat-ultralytics

[moyu026]

./ultralytics/cfg/datasets，这个路径下没有datasets

[kittentruck]

已添加缺失的数据配置文件 ，.yaml 文件中的 path、train 和 val 路径可能需要修改一下

[moyu026]

写下运行需要的requirements.txt

[kittentruck]

已添加requirements.txt文件，并修改了其它文件

[moyu026]

ultralytics包已经安装了，运行python examples/yolo/classify/run_train.py --save_dir ./runs/cls/train_finetune 出现下面的问题。readme里最好提供下pt权重的下载链接。

Traceback (most recent call last):
File "/home/mindspore/work/mindnlp/src/mindnlp/ultralytics/examples/yolo/classify/run_train.py", line 14, in
from ultralytics.models.yolo.classify.train import ClassificationTrainer
File "/home/mindspore/work/mindnlp/src/mindnlp/ultralytics/init.py", line 1, in
from .models.model import YOLO
File "/home/mindspore/work/mindnlp/src/mindnlp/ultralytics/models/init.py", line 1, in
from .model import YOLO
File "/home/mindspore/work/mindnlp/src/mindnlp/ultralytics/models/model.py", line 13, in
from ultralytics.models.yolo.classify.train import ClassificationTrainer
File "/home/mindspore/work/mindnlp/src/mindnlp/ultralytics/models/yolo/classify/train.py", line 10, in
from ultralytics.models.yolo.classify.val import ClassificationValidator
File "/home/mindspore/work/mindnlp/src/mindnlp/ultralytics/models/yolo/classify/val.py", line 8, in
from ultralytics.data.loaders import create_dataloader
ModuleNotFoundError: No module named 'ultralytics.data'

[kittentruck]

已添加data文件夹，并在readme中补充上了权重下载链接

[moyu026]

MindNLP 0.6.0 版本下Classify，Detect，Segment，Pose任务都可以运行