enhance: add GitHub Actions to delete spam issues comments (#35807)

/kind improvement

Signed-off-by: zhuwenxing <wenxing.zhu@zilliz.com>

.github/workflows/delete_comments.yaml

@@ -0,0 +1,34 @@
+# via https://github.com/zed-industries/zed/blob/main/.github/workflows/delete_comments.yml
+name: Delete Mediafire Comments
+
+on:
+  issue_comment:
+    types: [created]
+
+permissions:
+  issues: write
+
+jobs:
+  delete_comment:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check for specific strings in comment
+        id: check_comment
+        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7
+        with:
+          script: |
+            const comment = context.payload.comment.body;
+            const triggerStrings = ['www.mediafire.com'];
+            return triggerStrings.some(triggerString => comment.includes(triggerString));
+
+      - name: Delete comment if it contains any of the specific strings
+        if: steps.check_comment.outputs.result == 'true'
+        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7
+        with:
+          script: |
+            const commentId = context.payload.comment.id;
+            await github.rest.issues.deleteComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              comment_id: commentId
+            });