ci: add benchmarking workflow

.github/workflows/benchmarking.yml

@@ -0,0 +1,37 @@
+name: Benchmarking
+
+on:
+  push:
+  pull_request:
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  check:
+    name: Benchmarking
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        toolchain: [nightly]
+
+    steps:
+      - id: checkout
+        name: Checkout Repository
+        uses: actions/checkout@v4
+
+      - id: setup
+        name: Setup Toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: ${{ matrix.toolchain }}
+          components: clippy
+
+      - id: cache
+        name: Enable Workflow Cache
+        uses: Swatinem/rust-cache@v2
+
+      - id: Benchmarking
+        name: Run Benchmarking
+        run: cargo bench

README.md

@@ -1,6 +1,6 @@
 # Torrust Serde Bencode
 
-[![Checking](https://github.com/torrust/torrust-serde-bencode/actions/workflows/checking.yml/badge.svg)](https://github.com/torrust/torrust-serde-bencode/actions/workflows/checking.yml) [![Formatting](https://github.com/torrust/torrust-serde-bencode/actions/workflows/formatting.yml/badge.svg)](https://github.com/torrust/torrust-serde-bencode/actions/workflows/formatting.yml) [![Testing](https://github.com/torrust/torrust-serde-bencode/actions/workflows/testing.yaml/badge.svg)](https://github.com/torrust/torrust-serde-bencode/actions/workflows/testing.yaml)
+[![Checking](https://github.com/torrust/torrust-serde-bencode/actions/workflows/checking.yml/badge.svg)](https://github.com/torrust/torrust-serde-bencode/actions/workflows/checking.yml) [![Formatting](https://github.com/torrust/torrust-serde-bencode/actions/workflows/formatting.yml/badge.svg)](https://github.com/torrust/torrust-serde-bencode/actions/workflows/formatting.yml) [![Testing](https://github.com/torrust/torrust-serde-bencode/actions/workflows/testing.yaml/badge.svg)](https://github.com/torrust/torrust-serde-bencode/actions/workflows/testing.yaml) [![Benchmarking](https://github.com/torrust/torrust-serde-bencode/actions/workflows/benchmarking.yaml/badge.svg)](https://github.com/torrust/torrust-serde-bencode/actions/workflows/benchmarking.yaml)
 
 A [Serde](https://github.com/serde-rs/serde) backed [Bencode](https://en.wikipedia.org/wiki/Bencode)
 encoding/decoding library for Rust.
@@ -21,3 +21,9 @@ serde_derive = "^1.0.0"
 ## Usage
 
 This is an abbreviated `.torrent` parsing example from [examples/parse_torrent.rs](examples/parse_torrent.rs). If you compile this crate as a binary, it will print metadata for any Torrent sent to stdin.
+
+## Benchmarking
+
+```console
+cargo bench
+```