Setup github issue templates

What kind of issue is this?

• Question.
  This issue tracker is not the place for questions. If you want to ask how to do something,
  or to understand why something isn't working the way you expect it to,
  use Community Forums or Premium Support

• PlatformIO IDE.
  All issues related to PlatformIO IDE should be reported to appropriate repository:
  PlatformIO IDE for Atom or
  PlatformIO IDE for VSCode

• Development Platform or Board.
  All issues (building, uploading, adding new boards, etc.) related to PlatformIO development platforms
  should be reported to appropriate repository related to your hardware
  https://github.com/topics/platformio-platform

• Feature Request.
  Start by telling us what problem you’re trying to solve. Often a solution
  already exists! Don’t send pull requests to implement new features without first getting our
  support. Sometimes we leave features out on purpose to keep the project small.

• PlatformIO Core.
  If you’ve found a bug, please provide an information below.

You can erase any parts of this template not applicable to your Issue.

Github supports issue templates, it might be useful to implement in this repo to get rid of all the clunkiness above, it also makes the user experience better IMO, and it can pre-label issues, automating some of the manual triaging work.

https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/configuring-issue-templates-for-your-repository

Start with GitHub's issue-template documentation linked in the issue and inspect the repository's current issue flow. Define templates that replace the existing checklist and identify which labels should be applied automatically; done means users can select the relevant issue type and triage requires less manual work.