Add CodSpeed for benchmarks

.github/workflows/benchmark.yml

@@ -1,7 +1,16 @@
 on:
+  push:
+    branches:
+      - master
+    paths:
+      - '**.rs'
   pull_request:
     paths:
       - '**.rs'
+  # `workflow_dispatch` allows CodSpeed to trigger backtest
+  # performance analysis in order to generate initial data.
+  workflow_dispatch:
+
 name: Benchmark pull requests
 jobs:
   runBenchmark:
@@ -11,9 +20,16 @@ jobs:
       - uses: actions/checkout@v3
         with:
           fetch-depth: 0
-      - uses: dtolnay/rust-toolchain@stable
-      - uses: boa-dev/criterion-compare-action@v3
+      - name: Setup rust toolchain, cache and cargo-codspeed binary
+        uses: moonrepo/setup-rust@v0
+        with:
+          channel: stable
+          cache-target: release
+          bins: cargo-codspeed
+      - name: Build the benchmark target(s)
+        run: cargo codspeed build -p palette --features wide
+      - name: Run the benchmarks
+        uses: CodSpeedHQ/action@v1
         with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-          branchName: ${{ github.base_ref }}
-          features: "wide"
+          run: cargo codspeed run
+          token: ${{ secrets.CODSPEED_TOKEN }}