Add config

Author: fregante

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: false
+contact_links:
+  - name: ❌ Do not open new issues on this repo
+    url: https://github.com/xojs/xo/issues
+    about: Use the XO issue tracker instead of this one.