Add codspeed run action

.github/workflows/codspeed.yaml

@@ -0,0 +1,70 @@
+name: CodSpeed
+
+on:
+  push:
+    branches:
+      - "main"
+      - "codspeed"
+  pull_request:
+  # `workflow_dispatch` allows CodSpeed to trigger backtest
+  # performance analysis in order to generate initial data.
+  workflow_dispatch:
+
+jobs:
+  codspeed:
+    name: Run benchmarks
+    runs-on: ubuntu-latest
+    env:
+      # Set features for the Makefile
+      FEATURES: ${{ matrix.features }}
+    strategy:
+      matrix:
+        toolchain:
+          - stable
+        features:
+          - ""
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: ${{ matrix.toolchain }}
+
+      - name: Download builder playground
+        uses: flashbots/[email protected]
+        with:
+          builder-playground: v0.1.3
+
+      # https://github.com/swatinem/rust-cache
+      - name: Run Swatinem/rust-cache@v2
+        uses: Swatinem/rust-cache@v2
+        with:
+          cache-on-failure: true
+
+      # https://github.com/Mozilla-Actions/sccache-action
+      - name: Run sccache-action
+        uses: mozilla-actions/[email protected]
+
+      - name: Set sccache env vars
+        run: |
+          echo "SCCACHE_GHA_ENABLED=true" >> $GITHUB_ENV
+          echo "RUSTC_WRAPPER=sccache" >> $GITHUB_ENV
+
+      - name: Build the rbuilder
+        run: cargo build --features="${{ matrix.features }}"
+
+      - name: Run the playground
+        run: builder-playground &
+
+      - name: Install codspeed
+        run: cargo install cargo-codspeed
+
+      - name: Build the benchmark target(s)
+        run: cargo codspeed build
+
+      - name: Run the benchmarks
+        uses: CodSpeedHQ/action@v3
+        with:
+          run: cargo codspeed run
+          token: ${{ secrets.CODSPEED_TOKEN }}