ci: add bench workflow

.github/workflows/bench.yml

@@ -0,0 +1,28 @@
+on:
+  push:
+    branches: master
+
+jobs:
+  benchmark_base_branch:
+    name: Continuous Benchmarking with Bencher
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: bencherdev/bencher@main
+      - name: install dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install clang-15 ccache build-essential libtool autotools-dev automake pkg-config bsdmainutils python3-zmq libevent-dev libboost-dev libsqlite3-dev libdb++-dev systemtap-sdt-dev libminiupnpc-dev libnatpmp-dev libqt5gui5 libqt5core5a libqt5dbus5 qttools5-dev qttools5-dev-tools qtwayland5 libqrencode-dev -y
+      - name: Build bitcoind
+        run: |
+          ./autogen.sh && CC=clang-15 CXX=clang++-15 ./configure && make clean && make -j $(nproc) -C src bitcoind
+      - name: Track base branch benchmarks with Bencher
+        run: |
+          bencher run \
+          --project core-test \
+          --token '${{ secrets.BENCHER_API_TOKEN }}' \
+          --branch master \
+          --testbed ubuntu-latest \
+          --adapter shell_hyperfine \
+          --err \
+          "hyperfine --runs 1 --export-json results.json './src/bitcoind --stopatheight 50000'"