[i18n-fr] Translating docs to fr

<!-- Note: Please search to see if an issue already exists for the language you are trying to translate. --> Hi! Let's bring the documentation to all the french-speaking community 🌐 (currently 0 out of 267 complete) Who would want to translate? Please follow the 🤗 [TRANSLATING guide](https://github.com/huggingface/transformers/blob/main/docs/TRANSLATING.md). Here is a list of the files ready for translation. Let us know in this issue if you'd like to translate any, and we'll add your name to the list. Some notes: * Please translate using an informal tone (imagine you are talking with a friend about transformers 🤗). * Please translate in a gender-neutral way. * Add your translations to the folder called `<languageCode>` inside the [source folder](https://github.com/huggingface/transformers/tree/main/docs/source). * Register your translation in `<languageCode>/_toctree.yml`; please follow the order of the [English version](https://github.com/huggingface/transformers/blob/main/docs/source/en/_toctree.yml). * Once you're finished, open a pull request and tag this issue by including #issue-number in the description, where issue-number is the number of this issue. Please ping @ArthurZucker, @sgugger for review. * 🙋 If you'd like others to help you with the translation, you can also post in the 🤗 [forums](https://discuss.huggingface.co/). ## Get Started section - [x] [index.mdx](https://github.com/huggingface/transformers/blob/main/docs/source/en/index.mdx) (https://github.com/huggingface/transformers/pull/21458) - [x] [quicktour.mdx](https://github.com/huggingface/transformers/blob/main/docs/source/en/quicktour.mdx)(https://github.com/huggingface/transformers/pull/21589) - [x] [installation.mdx](https://github.com/huggingface/transformers/blob/main/docs/source/en/installation.mdx)(https://github.com/huggingface/transformers/pull/27657) ## Tutorial section - [ ] [pipeline_tutorial.mdx](https://github.com/huggingface/transformers/blob/main/docs/source/en/pipeline_tutor…