Add PyTorch🔥 documentation (DeepLabCut#2605)

* added initial pytorch docs

* Update _toc.yml

* Update user_guide.md

* Update architectures.md

* Update labelling.md

* Update labelling.md

* Update codespell.yml

* Update README.md

* Update installation.md

* Delete conda-environments/DEEPLABCUT_M1.yaml

* Update DEEPLABCUT.yaml

* Update installation.md

* Update maDLC_UserGuide.md

* Update ModelZoo.md

* Update standardDeepLabCut_UserGuide.md

* Update standardDeepLabCut_UserGuide.md

* Update standardDeepLabCut_UserGuide.md

* Update Overviewof3D.md

* Update PROJECT_GUI.md

* Update UseOverviewGuide.md

* Update beginners-guide.md

* Update intro.md

* Update architectures.md

* Update architectures.md

* Create course.md

- updating and migration from workshop materials

* Update _toc.yml

* Update manage-project.md

* Update beginners-guide.md

* Update manage-project.md

* Update _toc.yml

* Rename labelling.md to labeling.md

* Update Training-Evaluation.md

* Update video-analysis.md

* Update architectures.md

* Update architectures.md

* Update AUTHORS

* Update architectures.md

* doc clean up, tested local build

* Update beginners-guide.md

* Update ModelZoo.md

* Update ModelZoo.md

* Update ModelZoo.md

* Update ModelZoo.md

* Update README.md

- small resize on homepage

* Update ModelZoo.md

* Update ModelZoo.md

- link update

* Update AUTHORS

* Update README.md

- add badge for python version supported

* Update installation.md

* Update DEEPLABCUT.yaml

- this, for now, will install from branch source (assuming the branch is named "pytorch_dlc"

* Update DEEPLABCUT.yaml

* Update AUTHORS

* fixed typos

* Update python-package.yml

* Update README.md

* Update beginners-guide.md

* Update user_guide.md

* m1 for tf only

* Update README.md

---------

Co-authored-by: Mackenzie Mathis <mathis@rowland.harvard.edu>
Co-authored-by: Mackenzie Mathis <mackenzie.mathis@epfl.ch>

prepf for 2.3.10 (DeepLabCut#2602)

Version update (DeepLabCut#2514)

release updates (DeepLabCut#2434)

Update version (DeepLabCut#2413)

release prep (DeepLabCut#2392)

version update (DeepLabCut#2257)

update version (DeepLabCut#2222)

Version in setup update

Minor COLAB modelzoo improvements (DeepLabCut#2103)

* Change dataset_type to single-animal

* Minor improvements