bot for answered issues (#5563)

* add tiangolo's issue manager

* fix formatting

* spaces, tabs, who knows

* formatting

* I'll get this right at some point

* maybe one more space ?

.github/workflows/issue-manager.yml

@@ -0,0 +1,28 @@
+name: Issue Manager
+
+on:
+  schedule:
+    - cron: "0 0 * * *"
+  issue_comment:
+    types:
+      - created
+      - edited
+  issues:
+    types:
+      - labeled
+
+jobs:
+  issue-manager:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: tiangolo/issue-manager@0.2.0
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          config: >
+            {
+              "answered": {
+                "delay": "P3D",
+                "message": "This issue has been automatically closed because it was answered and there was no follow-up discussion.",
+                "remove_label": true
+              }
+            }