fixup! Add an issue template

Move the template to .github/ISSUE_TEMPLATE/ in preparation for
turning it into an issue form that also works on the mobile GitHub app.

Since .github/ISSUE_TEMPLATE/ can contain multiple templates give it a
unique name and the bare minimum of YAML front matter that GitHub
requires for issue templates in that folder.

Signed-off-by: Matthias Aßhauer <[email protected]>

Author: rimrul

.github/ISSUE_TEMPLATE.md renamed to .github/ISSUE_TEMPLATE/bug-report.md

@@ -1,3 +1,7 @@
+---
+name: Bug report
+about: Use this template to report bugs.
+---
  - [ ] I was not able to find an [open](https://github.com/git-for-windows/git/issues?q=is%3Aopen) or [closed](https://github.com/git-for-windows/git/issues?q=is%3Aclosed) issue matching what I'm seeing
 
 ### Setup