chore: implement benchmarking cli and action

.github/workflows/tests.yaml

@@ -12,10 +12,20 @@ jobs:
       steps:
         - name: Checkout repository
           uses: actions/checkout@v3
+          with:
+            fetch-depth: 0 # Fetch all history for comparison
 
         - name: Set up Docker
           uses: docker/setup-buildx-action@v2
 
+        - name: Check for changes in src/
+          uses: dorny/paths-filter@v3
+          id: changes
+          with:
+            filters: |
+              src:
+                - 'src/**'
+
         - name: Install Aztec CLI
           run: |
             curl -s https://install.aztec.network > tmp.sh
@@ -51,4 +61,18 @@ jobs:
 
         - name: Run js tests
           run: script -e -c "BASE_PXE_URL=http://localhost NODE_NO_WARNINGS=1 node --experimental-vm-modules $(yarn bin jest) --no-cache --runInBand --config jest.integration.config.json"
+
+        - name: Benchmark
+          uses: defi-wonderland/aztec-benchmark-diff/action@fix/troubleshoot
+          if: steps.changes.outputs.src == 'true'
+          with:
+            threshold: '2.0'
+            output_markdown_path: 'benchmark_diff.md'
+
+        - name: Comment diff
+          uses: peter-evans/create-or-update-comment@v4
+          if: steps.changes.outputs.src == 'true'
+          with:
+            issue-number: ${{ github.event.pull_request.number }}
+            body-file: benchmark_diff.md
 

Nargo.toml

@@ -1,4 +1,8 @@
 [workspace]
 members = [
-"src/token_contract"
-]
+  "src/token_contract"
+]
+
+[benchmark]
+token = "benchmarks/token_contract.benchmark.ts"
+