Introduce GitHub issue forms

[FollowTheProcess]

Closes #585

I've taken an initial stab at porting our issue templates to the new GitHub forms.

I've tried to keep the intent of the originals but also threw some of the nice features of the new templates at them for good measure!

I've also added a new form for a generic question about Nox as I believe this is useful for people who want to know something but don't want to raise a "scary" sounding bug or issue.

More than happy to tweak the contents if we want, just kicking things off 👍🏻

You can view the new forms by clicking on the files and GitHub will render it how it will look when filing the issue 🙂

[DiddiLeija]

Strong +1 from me! I watched how these new templates worked in pip and some other projects, and I think they will look pretty nice here!

[crwilcox]

+1 on this. Only comment is if we wouldn't benefit from making some fields required. But this is the closest to a port, by not doing that, and perhaps worth further discussion.

Thanks for taking this on.

[FollowTheProcess]

I've removed the question form from this as we're planning to include a permalink to the nox discord channel as discussed in #534

[FollowTheProcess]

@crwilcox I think a sensible thing to do with making things required might be to use these templates for a period of time and see if new issues are lacking important information, then we can make those fields required or adjust other aspects of the forms going forward?