GITHUB: Added two contact links when creating an GitHub issue.

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

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,8 @@
+blank_issues_enabled: false
+contact_links:
+  - name: I have a question or need support
+    url: https://docs.dnscontrol.org/
+    about: We use GitHub for tracking bugs, check our website for resources on getting help.
+  - name: I'm unsure where to go
+    url: https://groups.google.com/g/dnscontrol-discuss
+    about: If you are unsure where to go, then joining our mailing list is recommended; Just ask!