Add github workflow

.github/workflows/benchmark.yaml

@@ -0,0 +1,61 @@
+name: Floris Benchmark
+on:
+  schedule:
+    - cron: '0 3 * * *'  # Runs daily at 3am UTC
+  workflow_dispatch:  # Allows manual triggering of the workflow
+
+permissions:
+  contents: write
+  deployments: write
+
+jobs:
+  benchmark:
+    name: Run FLORIS benchmarks
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.9, 3.10, 3.11]  # Or whichever versions you support
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Python ${{ matrix.python-version }}
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install project
+        run: |
+          python -m pip install --upgrade pip
+          pip install -e ".[develop]"
+      - name: Run benchmark
+        run: |
+          cd benchmarks
+          pytest bench.py --benchmark-json output.json
+
+      - name: Store benchmark result
+        uses: benchmark-action/github-action-benchmark@v1
+        with:
+          name: Python Benchmark with pytest-benchmark
+          tool: 'pytest'
+          output-file-path: benchmarks/output.json
+          # Use personal access token instead of GITHUB_TOKEN due to https://github.community/t/github-action-not-triggering-gh-pages-upon-push/16096
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          auto-push: true
+          # Show alert with commit comment on detecting possible performance regression
+          alert-threshold: '200%'
+          comment-on-alert: true
+          fail-on-alert: true
+          alert-comment-cc-users: '@ktrz'
+
+      - name: Store benchmark result - separate results repo
+        uses: benchmark-action/github-action-benchmark@v1
+        with:
+          name: Python Benchmark with pytest-benchmark
+          tool: 'pytest'
+          output-file-path: benchmarks/output.json
+          # Use personal access token instead of GITHUB_TOKEN due to https://github.community/t/github-action-not-triggering-gh-pages-upon-push/16096
+          github-token: ${{ secrets.BENCHMARK_ACTION_BOT_TOKEN }}
+          auto-push: true
+          # Show alert with commit comment on detecting possible performance regression
+          # alert-threshold: '200%'
+          # comment-on-alert: true
+          # fail-on-alert: true
+          # alert-comment-cc-users: '@ktrz'
+          # gh-repository: 'github.com/benchmark-action/github-action-benchmark-results'