Add codspeed

.github/workflows/codspeed.yml

@@ -0,0 +1,29 @@
+name: CodSpeed Benchmarks
+
+on:
+  push:
+    branches:
+      - "main" # or "master"
+  pull_request:
+  # `workflow_dispatch` allows CodSpeed to trigger backtest
+  # performance analysis in order to generate initial data.
+  workflow_dispatch:
+
+jobs:
+  benchmarks:
+    name: Run benchmarks
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      # ...
+      # Setup your environment here:
+      #  - Configure your Python/Rust/Node version
+      #  - Install your dependencies
+      #  - Build your benchmarks (if using a compiled language)
+      # ...
+      - name: Run the benchmarks
+        uses: CodSpeedHQ/action@v4
+        with:
+          mode: instrumentation
+          run: <Insert your benchmark command here>
+          token: ${{ secrets.CODSPEED_TOKEN }} # optional for public repos