Add Audio Spectogram Transformer (#19981)

* First draft

* Make conversion script work

* Add id2label mapping, run code quality

* Fix copies

* Add first draft of feature extractor

* Update conversion script to use feature extractor

* Make more tests pass

* Add docs

* update input_features to input_values + pad by default to max length

* Fix doc tests

* Add feature extractor tests

* Add proper padding/truncation to feature extractor

* Add support for conversion of all audioset checkpoints

* Improve docs and extend conversion script

* Fix README

* Rename spectogram to spectrogram

* Fix copies

* Add integration test

* Remove dummy conv

* Update to ast

* Update organization

* Fix init

* Rename model to AST

* Add require_torchaudio annotator

* Move import of ASTFeatureExtractor under a is_speech_available

* Fix rebase

* Add pipeline config

* Update name of classifier head

* Rename time_dimension and frequency_dimension for clarity

* Remove print statement

* Fix pipeline test

* Fix pipeline test

* Fix index table

* Fix init

* Fix conversion script

* Rename to ForAudioClassification

* Fix index table

Co-authored-by: Niels Rogge <nielsrogge@Nielss-MacBook-Pro.local>

utils/documentation_tests.txt

@@ -18,6 +18,7 @@ src/transformers/generation/utils.py
 src/transformers/models/albert/configuration_albert.py
 src/transformers/models/albert/modeling_albert.py
 src/transformers/models/albert/modeling_tf_albert.py
+src/transformers/models/audio_spectogram_transformer/modeling_audio_spectogram_transformer.py
 src/transformers/models/bart/configuration_bart.py
 src/transformers/models/bart/modeling_bart.py
 src/transformers/models/beit/configuration_beit.py