Moshi integration (#33624)

* clean mimi commit

* some nits suggestions from Arthur

* make fixup

* first moshi WIP

* converting weights working + configuration + generation configuration

* finalize converting script - still missing tokenizer and FE and processor

* fix saving model w/o default config

* working generation

* use GenerationMixin instead of inheriting

* add delay pattern mask

* fix right order: moshi codes then user codes

* unconditional inputs + generation config

* get rid of MoshiGenerationConfig

* blank user inputs

* update convert script:fix conversion, add  tokenizer, feature extractor and bf16

* add and correct Auto classes

* update modeling code, configuration and tests

* make fixup

* fix some copies

* WIP: add integration tests

* add dummy objects

* propose better readiblity and code organisation

* update tokenization tests

* update docstrigns, eval and modeling

* add .md

* make fixup

* add MoshiForConditionalGeneration to ignore Auto

* revert mimi changes

* re

* further fix

* Update moshi.md

* correct md formating

* move prepare causal mask to class

* fix copies

* fix depth decoder causal

* fix and correct some tests

* make style and update .md

* correct config checkpoitn

* Update tests/models/moshi/test_tokenization_moshi.py

Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>

* Update tests/models/moshi/test_tokenization_moshi.py

Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>

* make style

* Update src/transformers/models/moshi/__init__.py

Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>

* fixup

* change firm in copyrights

* udpate config with nested dict

* replace einsum

* make style

* change split to True

* add back splt=False

* remove tests in convert

* Update tests/models/moshi/test_modeling_moshi.py

Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>

* add default config repo + add model to FA2 docstrings

* remove logits float

* fix some tokenization tests and ignore some others

* make style tokenization tests

* update modeling with sliding window + update modeling tests

* [run-slow] moshi

* remove prepare for generation frol CausalLM

* isort

* remove copied from

* ignore offload tests

* update causal mask and prepare 4D mask aligned with recent changes

* further test refine + add back prepare_inputs_for_generation for depth decoder

* correct conditional use of prepare mask

* update slow integration tests

* fix multi-device forward

* remove previous solution to device_map

* save_load is flaky

* fix generate multi-devices

* fix device

* move tensor to int

---------

Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>
Co-authored-by: Marc Sun <marc@huggingface.co>

docs/source/en/perf_infer_gpu_one.md

@@ -70,6 +70,7 @@ FlashAttention-2 is currently supported for the following architectures:
 * [MBart](https://huggingface.co/docs/transformers/model_doc/mbart#transformers.MBartModel)
 * [Mistral](https://huggingface.co/docs/transformers/model_doc/mistral#transformers.MistralModel)
 * [Mixtral](https://huggingface.co/docs/transformers/model_doc/mixtral#transformers.MixtralModel)
+* [Moshi](https://huggingface.co/docs/transformers/model_doc/moshi#transformers.MoshiModel)
 * [Musicgen](https://huggingface.co/docs/transformers/model_doc/musicgen#transformers.MusicgenModel)
 * [MusicGen Melody](https://huggingface.co/docs/transformers/model_doc/musicgen_melody#transformers.MusicgenMelodyModel)
 * [Nemotron](https://huggingface.co/docs/transformers/model_doc/nemotron)
@@ -241,6 +242,7 @@ For now, Transformers supports SDPA inference and training for the following arc
 * [Mistral](https://huggingface.co/docs/transformers/model_doc/mistral#transformers.MistralModel)
 * [Mllama](https://huggingface.co/docs/transformers/model_doc/mllama#transformers.MllamaForConditionalGeneration)
 * [Mixtral](https://huggingface.co/docs/transformers/model_doc/mixtral#transformers.MixtralModel)
+* [Moshi](https://huggingface.co/docs/transformers/model_doc/moshi#transformers.MoshiModel)
 * [Musicgen](https://huggingface.co/docs/transformers/model_doc/musicgen#transformers.MusicgenModel)
 * [MusicGen Melody](https://huggingface.co/docs/transformers/model_doc/musicgen_melody#transformers.MusicgenMelodyModel)
 * [NLLB](https://huggingface.co/docs/transformers/model_doc/nllb)