chore: Block new issues

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,8 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Get help
+    url: https://github.com/sapegin/textlint-rule-terminology/discussions/new?category=q-a
+    about: If you can’t get something to work the way you expect, open a question in our discussion forums.
+  - name: Report a bug
+    url: https://github.com/sapegin/textlint-rule-terminology/discussions/new?category=bugs
+    about: If something is broken in the project itself, create a bug report.