Install close-issue-app

.github/issue-close-app.yml

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+# Comment that will be sent if an issue is judged to be closed.
+comment: "This issue has been closed because it does not meet our Issue template. Please read our [guidelines for contributing](https://github.com/theme-next/hexo-theme-next/blob/master/.github/CONTRIBUTING.md#how-can-i-contribute)."
+issueConfigs:
+# There can be several configs for different kind of issues.
+- content:
+  - "Issue Checklist"
+# Optional configuration:
+#
+# whether the keywords are case-insensitive
+# default value is false, which means keywords are case-sensitive
+caseInsensitive: true
+# the label that will be added when the bot close an issue
+# The bot will only add a label if this property is set.
+label: "Invalid"
+# The issue is judged to be legal if it includes all keywords from any of these two configs.
+# Or it will be closed by the app.