Chore: add issues config (#344)

.github/ISSUE_TEMPLATE/config.yaml

@@ -0,0 +1,4 @@
+contact_links:
+  - name: 加入 Telegram 群组 / Join Telegram Group
+    url: https://t.me/projectXray
+    about: 使用问题请加入群组讨论 / For usage problems please chat in the group