Add redirect to support forum

Author: corneliusyaovi

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Developer Support Forum
+    url: https://forum.flutterwave.com
+    about: If you're having general trouble with your integration, Kindly contact our support team.