chore(github): issue template configuration and update issue templates

[qdm12]

Why this should be merged

• Issue templates are specific to geth, not libevm
• We should have a contact link pointing to the libevm github discussions if a user needs help - see chore: migrate instead of delete old labels #95 (comment)

How this works

• .github/ISSUE_TEMPLATE/config.yml added to add a Github discussion contact link and disable blank issues
• remove question issue template (see point above)
• bug.md and feature.md geth issue templates removed (to simplify fork sync conflicts)
• bug.yml and feature.yml libevm focused issue templates added (using the newer yml format)

[ARR4N]

Is this an automated process?

[qdm12]

no 😄 just a warning in place so users don't forget to set the title of the issue and the libevm version. I had personally wayyyy too many issues without a title and/or without a version, which make things pretty horrible to maintain, and that reduced them, but we can remove this for now if you feel it's unecessary. I would recommend not automating in case it's still a serious issue, even without title/version 😮

[ARR4N]

I'm ok with doing that but think we need to soften the language then. Please remove "instantly" and "WITHOUT explanation" as it's a little too aggressive.

Your issue will be closed as "not planned" if:

[ARR4N]

Approved pending softening of the language, please.

[ARR4N]

I'm ok with doing that but think we need to soften the language then. Please remove "instantly" and "WITHOUT explanation" as it's a little too aggressive.

Your issue will be closed as "not planned" if: