Add Auto Pre-Commit (#685)

Author: blink1073

.github/workflows/trigger_precommit.yml

@@ -0,0 +1,24 @@
+name: Trigger Pre-Commit on a PR
+on:
+  issue_comment:
+    types: [created]
+
+permissions:
+  pull-requests: write
+
+jobs:
+  pr-script:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: khan/[email protected]
+        id: check
+        with:
+          trigger: "auto run pre-commit"
+      - if: steps.check.outputs.triggered == 'true'
+        uses: jupyterlab/maintainer-tools/.github/actions/pr-script@v1
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          pre_commit: true
+          commit_message: "auto run pre-commit"
+          target: ${{ github.event.issue.html_url }}
+          association: ${{ github.event.comment.author_association }}