We're still getting bug reports circumventing the bug report template
and omitting informations.
Blank issue (aka, not using the form templates) can still be created
using the gh cli, the API, etc. This only disable the possibility in the
Web UI.
* Convert the bug-report template to issue form
* Convert the enchancement issue template to form
* Convert "Failing Test" template to issue form
* github: Remove support request template, direct to slack instead