:rotating_light: :rotating_light: :rotating_light: [Breaking change] Deformable DETR intermediate representations
Author: Narsil
Pull request: yes

# What does this PR do?

- Fixes naturally the `object-detection` pipeline.
- Moves from `[n_decoders, batch_size, ...]` to `[batch_size,
  n_decoders, ...]` instead.


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Fixes # (issue)


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Models:

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Comments:
_The documentation is not available anymore as the PR was closed or merged._

```
==================================================================================================== 73 passed, 8 skipped, 49 warnings in 98.91s (0:01:38) =====================================================================================================

```
Is that OK (I think the skipped are just unsupported features like resize_tokens)

Ok!

@sgugger Since this is breaking, I'll let you merge when it's more convenient.

Let's go :-)