This PR aims at integrating Bark, a TTS model, to `transformers`.
`Bark` was designed and trained by [Suno-AI team](https://github.com/suno-ai/bark) and is made of 4 main components:

- A `semantic model ` (also named `text model`), i.e a causal autoregressive transformer (GPT2-like), which takes into input a tokenized text
- A `coarse acoustics model` (also named `coarse model`), also a causal autoregressive transformer, taking into input the results of the last model. It aims at regressing the first two audio codebooks necessary to `encodec`.
- A `fine acoustics model` (`fine model`), this time a non-causal autoencoder transformer, which iteratively predicts the 6 last codebooks based on the sum of the previous codebooks embeddings.
- having predicted 8 codebooks channels of `encodec`, Bark uses `encodec` to generate the output audio array.

Note that each of the first 3 modules can take optional conditional speaker embeddings aiming at conditioning the output audio according to `specific preset voices.
Add bark. This PR aims at integrating Bark, a TTS model, to `transformers`.
`Bark` was designed and trained by [Suno-AI team](https://github.com/suno-ai/bark) and is made of 4 main components:

- A `semantic model ` (also named `text model`), i.e a causal autoregressive transformer (GPT2-like), which takes into input a tokenized text
- A `coarse acoustics model` (also named `coarse model`), also a causal autoregressive transformer, taking into input the results of the last model. It aims at regressing the first two audio codebooks necessary to `encodec`.
- A `fine acoustics model` (`fine model`), this time a non-causal autoencoder transformer, which iteratively predicts the 6 last codebooks based on the sum of the previous codebooks embeddings.
- having predicted 8 codebooks channels of `encodec`, Bark uses `encodec` to generate the output audio array.

Note that each of the first 3 modules can take optional conditional speaker embeddings aiming at conditioning the output audio according to `specific preset voices.
cff-version: "1.2.0"
date-released: 2020-10
message: "If you use this software, please cite it using these metadata."
title: "Transformers: State-of-the-Art Natural Language Processing"
url: "https://github.com/huggingface/transformers"
authors: 
  - family-names: Wolf
    given-names: Thomas
  - family-names: Debut
    given-names: Lysandre
  - family-names: Sanh
    given-names: Victor
  - family-names: Chaumond
    given-names: Julien
  - family-names: Delangue
    given-names: Clement
  - family-names: Moi
    given-names: Anthony
  - family-names: Cistac
    given-names: Perric
  - family-names: Ma
    given-names: Clara
  - family-names: Jernite
    given-names: Yacine
  - family-names: Plu
    given-names: Julien
  - family-names: Xu
    given-names: Canwen
  - family-names: "Le Scao"
    given-names: Teven
  - family-names: Gugger
    given-names: Sylvain
  - family-names: Drame
    given-names: Mariama
  - family-names: Lhoest
    given-names: Quentin
  - family-names: Rush
    given-names: "Alexander M."
preferred-citation:
  type: conference-paper
  authors:
  - family-names: Wolf
    given-names: Thomas
  - family-names: Debut
    given-names: Lysandre
  - family-names: Sanh
    given-names: Victor
  - family-names: Chaumond
    given-names: Julien
  - family-names: Delangue
    given-names: Clement
  - family-names: Moi
    given-names: Anthony
  - family-names: Cistac
    given-names: Perric
  - family-names: Ma
    given-names: Clara
  - family-names: Jernite
    given-names: Yacine
  - family-names: Plu
    given-names: Julien
  - family-names: Xu
    given-names: Canwen
  - family-names: "Le Scao"
    given-names: Teven
  - family-names: Gugger
    given-names: Sylvain
  - family-names: Drame
    given-names: Mariama
  - family-names: Lhoest
    given-names: Quentin
  - family-names: Rush
    given-names: "Alexander M."
  booktitle: "Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing: System Demonstrations"
  month: 10
  start: 38
  end: 45
  title: "Transformers: State-of-the-Art Natural Language Processing"
  year: 2020
  publisher: "Association for Computational Linguistics"
  url: "https://www.aclweb.org/anthology/2020.emnlp-demos.6"
  address: "Online"

cff-version: "1.2.0"
date-released: 2020-10
message: "If you use this software, please cite it using these metadata."
title: "Transformers: State-of-the-Art Natural Language Processing"
url: "https://github.com/huggingface/transformers"
authors: 
  - family-names: Wolf
    given-names: Thomas
  - family-names: Debut
    given-names: Lysandre
  - family-names: Sanh
    given-names: Victor
  - family-names: Chaumond
    given-names: Julien
  - family-names: Delangue
    given-names: Clement
  - family-names: Moi
    given-names: Anthony
  - family-names: Cistac
    given-names: Perric
  - family-names: Ma
    given-names: Clara
  - family-names: Jernite
    given-names: Yacine
  - family-names: Plu
    given-names: Julien
  - family-names: Xu
    given-names: Canwen
  - family-names: "Le Scao"
    given-names: Teven
  - family-names: Gugger
    given-names: Sylvain
  - family-names: Drame
    given-names: Mariama
  - family-names: Lhoest
    given-names: Quentin
  - family-names: Rush
    given-names: "Alexander M."
preferred-citation:
  type: conference-paper
  authors:
  - family-names: Wolf
    given-names: Thomas
  - family-names: Debut
    given-names: Lysandre
  - family-names: Sanh
    given-names: Victor
  - family-names: Chaumond
    given-names: Julien
  - family-names: Delangue
    given-names: Clement
  - family-names: Moi
    given-names: Anthony
  - family-names: Cistac
    given-names: Perric
  - family-names: Ma
    given-names: Clara
  - family-names: Jernite
    given-names: Yacine
  - family-names: Plu
    given-names: Julien
  - family-names: Xu
    given-names: Canwen
  - family-names: "Le Scao"
    given-names: Teven
  - family-names: Gugger
    given-names: Sylvain
  - family-names: Drame
    given-names: Mariama
  - family-names: Lhoest
    given-names: Quentin
  - family-names: Rush
    given-names: "Alexander M."
  booktitle: "Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing: System Demonstrations"
  month: 10
  start: 38
  end: 45
  title: "Transformers: State-of-the-Art Natural Language Processing"
  year: 2020
  publisher: "Association for Computational Linguistics"
  url: "https://www.aclweb.org/anthology/2020.emnlp-demos.6"
  address: "Online"
