Added TFBartForSequenceClassification
# What does this PR do?

Fixes: #19653

_The documentation is not available anymore as the PR was closed or merged._<|||||>@sgugger I have tested locally, not sure why tests are failing<|||||>@IMvision12 the common tests do not pass for the model you have added, you can run them with `pytest tests/models/bart/test_modeling_tf_bart.py`.

Also the equivalence test PyTorch/TensorFlow does not pas either.<|||||>@sgugger I've looked at some SequenceClassification models and the tests that have been written but none of them have TFSeq2SeqSequenceClassification or tests for it, so I'm not sure how to add a test for that. Need little help<|||||>@ydshieh Still the tests are failing<|||||>This issue has been solved in this PR here #20570 so i am closing this PR
 