Fix no such file or directory error
Author: RissyRan
Pull request: yes

# What does this PR do?

Add the logic to check if the output directory exists before opening the file. It fixes `no such file or directory` error when run [ViT model](https://github.com/huggingface/transformers/tree/8a817e1ecac6a420b1bdc701fcc33535a3b96ff5/examples/tensorflow/image-classification).

```
Traceback (most recent call last):
  File "/home/ranran/transformers/examples/tensorflow/image-classification/run_image_classification.py", line 564, in <module>
    main()
  File "/home/ranran/transformers/examples/tensorflow/image-classification/run_image_classification.py", line 546, in main
    with open(os.path.join(training_args.output_dir, "all_results.json"), "w") as f:
FileNotFoundError: [Errno 2] No such file or directory: './beans_outputs/all_results.json'
```

# How to reproduce:

```
pip install --upgrade pip
git clone https://github.com/huggingface/transformers.git
cd transformers && pip install .

pip install -r examples/tensorflow/_tests_requirements.txt
pip install -r examples/tensorflow/image-classification/requirements.txt


cd examples/tensorflow/image-classification
python3 run_image_classification.py \
    --dataset_name beans \
    --output_dir ./beans_outputs/ \
    --remove_unused_columns False \
    --do_train \
    --do_eval \
    --learning_rate 2e-5 \
    --num_train_epochs 1 \
    --per_device_train_batch_size 8 \
    --per_device_eval_batch_size 8 \
    --logging_strategy steps \
    --logging_steps 10 \
    --evaluation_strategy epoch \
    --save_strategy epoch \
    --save_total_limit 3 
```

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Fixes # (issue)


## Before submitting
- [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
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      Pull Request section?
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- [ ] Did you write any new necessary tests?


## Who can review?

@amyeroberts, @Rocketknight1

Anyone in the community is free to review the PR once the tests have passed. Feel free to tag
members/contributors who may be interested in your PR.

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Models:

- text models: @ArthurZucker and @younesbelkada
- vision models: @amyeroberts
- speech models: @sanchit-gandhi
- graph models: @clefourrier

Library:

- flax: @sanchit-gandhi
- generate: @gante
- pipelines: @Narsil
- tensorflow: @gante and @Rocketknight1
- tokenizers: @ArthurZucker
- trainer: @sgugger

Integrations:

- deepspeed: HF Trainer: @stas00, Accelerate: @pacman100
- ray/raytune: @richardliaw, @amogkam

Documentation: @sgugger, @stevhliu and @MKhalusova

HF projects:

- accelerate: [different repo](https://github.com/huggingface/accelerate)
- datasets: [different repo](https://github.com/huggingface/datasets)
- diffusers: [different repo](https://github.com/huggingface/diffusers)
- rust tokenizers: [different repo](https://github.com/huggingface/tokenizers)

Maintained examples (not research project or legacy):

- Flax: @sanchit-gandhi
- PyTorch: @sgugger
- TensorFlow: @Rocketknight1

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Comments:
_The documentation is not available anymore as the PR was closed or merged._

Looks like the CI is complaining about code style now! Can you `pip install transformers[quality]` and then `make style` in the `transformers `directory, then commit/push? That will run our code formatters and hopefully resolve the issue.

Thank you! I think the issues is resolved.

Yep, looks good. Thank you for the PR and the quick iteration!