chore: label issues

.github/label-actions.yml

+'reproduction:required':
+  issues:
+    comment: >
+      This issue has been labeled as requiring a reproduction, usually because implementation won't be possible without it.
+
+      Please consult our guide on [minimal reproductions](https://github.com/renovatebot/renovate/blob/master/docs/development/minimal-reproductions.md) to understand what is needed.
+'reproduction:provided':
+  issues:
+    comment: >
+      Thank you for providing a reproduction.
+
+      The label will be updated to `reproduction:verified` once someone else has confirmed they can reproduce the problem with it.

.github/workflows/label-actions.yml

+name: 'Label Actions'
+
+on:
+  issues:
+    types: [labeled, unlabeled]
+  pull_request:
+    types: [labeled, unlabeled]
+
+jobs:
+  reaction:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dessant/label-actions@v2
+        with:
+          github-token: ${{ github.token }}
+          process-only: 'issues'