TF port of Convnextv2
# What does this PR do?

TF port of convnextv2

@amyeroberts 

While converting pt weights to TensorFlow I am getting this error:
how to solve this?
```
All PyTorch model weights were used when initializing TFConvNextV2ForImageClassification.

All the weights of TFConvNextV2ForImageClassification were initialized from the PyTorch model.
If your task is similar to the task the model of the checkpoint was trained on, you can already use TFConvNextV2ForImageClassification for predictions without further training.
Traceback (most recent call last):
  File "/usr/local/bin/transformers-cli", line 8, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.10/dist-packages/transformers/commands/transformers_cli.py", line 55, in main
    service.run()
  File "/usr/local/lib/python3.10/dist-packages/transformers/commands/pt_to_tf.py", line 344, in run
    raise ValueError(
ValueError: The cross-loaded TensorFlow model has different outputs, something went wrong!

List of maximum output differences above the threshold (5e-05):
logits: 3.871e+00

List of maximum hidden layer differences above the threshold (5e-05):
hidden_states[1]: 3.463e-01
hidden_states[2]: 1.682e+00
hidden_states[3]: 2.259e+01
hidden_states[4]: 6.839e-01
```

Code used:

```
!transformers-cli pt-to-tf --model-name facebook/convnextv2-nano-1k-224 --no-pr --local-dir /content/convnextv2-nano-1k-224
```<|||||>_The documentation is not available anymore as the PR was closed or merged._