Add issue template (cpina#88)

Author: cpina

.github/ISSUE_TEMPLATE/windows_mac_nodocker.md

@@ -0,0 +1,10 @@
+---
+name: Windows/Mac/No Docker
+about: Questions about Windows/Mac/No Docker runners
+title: ''
+labels: Windows-Mac-NoDocker
+assignees: ''
+
+---
+
+Suggestion: see the relevant FAQ entry: https://cpina.github.io/push-to-another-repository-docs/faq.html#could-it-work-on-mac-os-windows-or-no-docker-environments