Add some addition links to issues

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,6 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Ask a question on Discussions area
+    url: https://github.com/netbootxyz/netboot.xyz/discussions
+  - name: Ask a question on the netboot.xyz Discord Server
+    url: https://discord.gg/An6PA2a