Replace issue templates with new issue forms (#65917)
Summary:
This PR introduces the new issue forms that replace issue templates.
This is similar to what was done in torchvision https://github.com/pytorch/vision/pull/4299 and torchaudio, you can see the end result here: https://github.com/pytorch/vision/issues/new/choose (click e.g. on the [bug report](https://github.com/pytorch/vision/issues/new?assignees=&labels=&template=bug-report.yml))
The main new thing is that we can enforce some of the fields to be filled, especially for bug reports. It's also a much cleaner GUI for users IMHO, and we can provide better examples and instructions.
There is still a "blank" template available.
I removed the "Questions" form: we say we close these issues anyway. I replaced it with a direct link to https://discuss.pytorch.org. Since we still have a "blank" template, I think this covers all previous use-cases properly.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/65917
Reviewed By: VitalyFedyunin
Differential Revision: D31894777
Pulled By: NicolasHug
fbshipit-source-id: fbd39f7ed4cadab732d106d3166c04c451c31f94