Add base issue template config

Author: DenWav

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: false
+contact_links:
+    - name: Minecraft Development for IntelliJ Discord
+      url: https://discord.gg/j6UNcfr
+      about: Join our Discord server if you just have a question