Update GH template for dataset viewer issues
_The documentation is not available anymore as the PR was closed or merged._ You can see rendering at: https://github.com/huggingface/datasets/blob/6b48fedbdafe12a42c7b6edcecc32820af1a4822/.github/ISSUE_TEMPLATE/dataset-viewer.yml
Update template to use new issue forms instead.

With this PR we can check if this new feature is useful for us.

Once validated, we can update the other templates.

CC: @severo 