Use the new formatted issue templates

[nicolo-ribaudo]

You can test this at https://github.com/nicolo-ribaudo/pdf.js/issues, and nicolo-ribaudo#1 is an example of the generated issue. It's unfortunate that all the small questions (such as "Operating system and its version") get their own header, but hopefully it will help with getting all the necessary info filled in properly.

[nicolo-ribaudo]

It seems like there is no way to have a yes/no required option whose default value is "unselected". I made the questions about "does this happen in the latest version" and "is this relevant to Firefox" default to no.

[Snuffleupagus]

This looks great to me, thank you for doing this!

(Not landing this right away, simply to give other core contributors a chance to comment.)

[timvandermeij]

I have requested a review from myself and @calixteman as additional sign-off on this. I'll try to have this reviewed tomorrow.

[marco-c]

LGTM!
Question: should we have "Is the bug present in the latest PDF.js version?" be "Yes" by default since that should be the most common answer?

[calixteman]

LGTM. Thank you.

[timvandermeij]

Looks good to me too, and I think I agree with the comment from @marco-c that that's probably a better default value for most issues.

[nicolo-ribaudo]

Default updated 👍

[timvandermeij]

Now that all four approvals are in and the discussed feedback is addressed, let's do this. This should increase the quality of the bug reports, and if need be we can always tweak it further. Thank you for doing this!