Add the benchmarking workflow

Author: ktrushin

.github/workflows/bench.yml

@@ -0,0 +1,26 @@
+name: Benchmarking
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+  workflow_dispatch:
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  bench:
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout the source code
+        uses: actions/checkout@v5
+
+      - name: cache and/or reuse compiled Rust dependencies
+        uses: Swatinem/rust-cache@v2
+
+      - name: build and run benchmarks
+        run: cargo bench --verbose