GitLab

* [Proposal] Adding ZeroShotImageClassificationPipeline

- Based on CLIP

* WIP, Resurection in progress.

* Resurrection... achieved.

* Reword handling different `padding_value` for `feature_extractor` and
`tokenizer`.

* Thanks doc-builder !

* Adding docs + global namespace `ZeroShotImageClassificationPipeline`.

* Fixing templates.

* Make the test pass and be robust to floating error.

* Adressing suraj's comments on docs mostly.

* Tf support start.

* TF support.

* Update src/transformers/pipelines/zero_shot_image_classification.py
Co-authored-by: Suraj Patil <surajp815@gmail.com>
Co-authored-by: Suraj Patil <surajp815@gmail.com>