test(gossipsub): Performance tests - aggregation script and workflow (#1577)

.github/actions/add_comment/action.yml

@@ -0,0 +1,41 @@
+name: Add Comment
+description: "Add or update comment in the PR"
+inputs:
+  marker:
+    description: "Text used to find the comment to update"
+    required: true
+  markdown_path:
+    description: "Path to the file containing markdown"
+    required: true
+
+runs:
+  using: "composite"
+  steps:
+    - name: Add/Update Comment
+      uses: actions/github-script@v7
+      with:
+        script: |
+          const fs = require('fs');
+          const marker = "${{ inputs.marker }}";
+          const body = fs.readFileSync("${{ inputs.markdown_path }}", 'utf8');
+          const { data: comments } = await github.rest.issues.listComments({
+            owner: context.repo.owner,
+            repo: context.repo.repo,
+            issue_number: context.issue.number,
+          });
+          const existing = comments.find(c => c.body && c.body.startsWith(marker));
+          if (existing) {
+            await github.rest.issues.updateComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              comment_id: existing.id,
+              body,
+            });
+          } else {
+            await github.rest.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body,
+            });
+          }

.github/workflows/performance.yml

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+name: Performance
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+  merge_group:
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  examples:
+    timeout-minutes: 10
+    strategy:
+      fail-fast: false
+
+    defaults:
+      run:
+        shell: bash
+
+    name: "Performance"
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          submodules: true
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build Docker Image with cache
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: performance/Dockerfile
+          tags: test-node:latest
+          load: true
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: Run
+        run: |
+          ./performance/runner.sh
+
+      - name: Set up Nim for aggragate script
+        uses: jiro4989/setup-nim-action@v2
+        with:
+          nim-version: "2.x"
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Aggregate and display summary
+        env:
+          MARKER: "<!-- perf-summary-marker -->"
+          PR_HEAD_SHA: ${{ github.event.pull_request.head.sha }}
+          COMMENT_SUMMARY_PATH: "/tmp/perf-summary.md"
+        run: |
+          nim c -r -d:release -o:/tmp/aggregate_stats ./performance/aggregate_stats.nim
+
+      - name: Post/Update PR Performance Comment
+        if: github.event_name == 'pull_request'
+        uses: ./.github/actions/add_comment
+        with:
+          marker: "<!-- perf-summary-marker -->"
+          markdown_path: "/tmp/perf-summary.md"