CI: use external comment-bot

Author: casperdcl

.github/workflows/comment-bot.yml

@@ -1,52 +1,14 @@
+
+# runs on any comment matching the format `/tag <tagname> <commit>`
 name: Comment Bot
 on:
   issue_comment: {types: [created]}
   pull_request_review_comment: {types: [created]}
 jobs:
-  tag:  # /tag <tagname> <commit>
-    if: startsWith(github.event.comment.body, '/tag ')
+  tag:
     runs-on: ubuntu-latest
-    permissions:
-      contents: write
-      pull-requests: write
-      issues: write
+    permissions: {contents: write, pull-requests: write, issues: write}
     steps:
     - uses: actions/checkout@v4
-    - name: React Seen
-      uses: actions/github-script@v7
-      with:
-        script: |
-          const perm = await github.rest.repos.getCollaboratorPermissionLevel({
-            owner: context.repo.owner, repo: context.repo.repo,
-            username: context.payload.comment.user.login})
-          post = (context.eventName == "issue_comment"
-            ? github.rest.reactions.createForIssueComment
-            : github.rest.reactions.createForPullRequestReviewComment)
-          if (!["admin", "write"].includes(perm.data.permission)){
-            post({
-              owner: context.repo.owner, repo: context.repo.repo,
-              comment_id: context.payload.comment.id, content: "laugh"})
-            throw "Permission denied for user " + context.payload.comment.user.login
-          }
-          post({
-            owner: context.repo.owner, repo: context.repo.repo,
-            comment_id: context.payload.comment.id, content: "eyes"})
-    - name: Tag Commit
-      run: |
-        git clone https://${GITHUB_TOKEN}@github.com/${GITHUB_REPOSITORY} repo
-        git -C repo tag $(echo "$BODY" | awk '{print $2" "$3}')
-        git -C repo push --tags
-        rm -rf repo
-      env:
-        BODY: ${{ github.event.comment.body }}
-        GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
-    - name: React Success
-      uses: actions/github-script@v7
-      with:
-        script: |
-          post = (context.eventName == "issue_comment"
-            ? github.rest.reactions.createForIssueComment
-            : github.rest.reactions.createForPullRequestReviewComment)
-          post({
-            owner: context.repo.owner, repo: context.repo.repo,
-            comment_id: context.payload.comment.id, content: "rocket"})
+      with: {fetch-depth: 0}
+    - uses: casperdcl/comment-bot@v1