Add contact links for v2 beta and API support

This way folks are pointed toward the v2 discussion instead of opening issues for feature requests & feedback.

.github/ISSUE_TEMPLATE/config.yml

@@ -1 +1,11 @@
 blank_issues_enabled: false
+contact_links:
+  - name: v2.0.0 Beta feedback
+    url: https://github.com/cloudflare/cloudflare-go/discussions/1538
+    about: |
+      If you have a feature request or feedback on our new v2 library, please comment in our discussion page.
+  - name: Cloudflare support
+    url: https://developers.cloudflare.com/support/contacting-cloudflare-support
+    about: |
+      Please only file issues here that you believe represent actual bugs for the Cloudflare Go library.
+      If you're having general trouble with the Cloudflare API, please visit our help center to get support.