Improve issue templates

[yatki]

Expected behavior

We can have multiple templates to differentiate issues coming from community with having the definitions below on top of the md files.

  ---
title: 'Bug report'
labels: bug
assignees: octocat
  ---

See: https://help.github.com/en/articles/manually-creating-a-single-issue-template-for-your-repository

Example: https://github.com/facebook/jest/issues/new/choose

Actual behavior

We have a single template at the moment.

Steps to reproduce

Which version(s) does this affect? (Environment, OS, etc...)