github-action-bot: use URL for benchmark report instead of embedding …

…it into comment

Currently benchmark report is posted directly to comment, but because of
terminal color codes it look unreadable. Sadly, github doesn't provide
any mechanism to add colors to the comment text (even in code blocks).
The best solution I can think of is to link to GH own logs to show
benchmark report

.github/workflows/cmd-run-benchmark.yml

@@ -32,14 +32,30 @@ jobs:
 
       - name: Run Benchmark
         run: |
-          cat <<EOF >> replyMessage.txt
-          <details>
-          <summary> Benchmark output </summary>
-          EOF
-          npm run benchmark -- --revs HEAD BASE | tee -a replyMessage.txt
-          cat <<EOF >> replyMessage.txt
-          </details>
-          EOF
+          npm run benchmark -- --revs HEAD BASE
+
+      - name: Create replyMessage
+        uses: actions/github-script@v5
+        with:
+          script: |
+            const fs = require('fs');
+
+            // GH doesn't expose job's id so we need to get it through API, see
+            // https://github.community/t/job-id-is-string-in-github-job-but-integer-in-actions-api/139060
+            const result = await github.rest.actions.listJobsForWorkflowRun({
+              ...context.repo,
+              run_id: context.runId,
+              filter: 'latest',
+            })
+
+            const currentJob = result.data.jobs.find(
+              (job) => job.name === 'cmd-run-benchmark / Run benchmark',
+            );
+
+            fs.writeFileSync(
+              './replyMessage.txt',
+              `Please, see benchmark results here: ${currentJob.html_url}#step:6:1`,
+            );
 
       - name: Upload replyMessage
         uses: actions/upload-artifact@v2