add tpch benchmark workflow

.github/workflows/tpch.yaml

@@ -0,0 +1,65 @@
+name: Rust TPC-H Benchmarks
+
+# Do not run this workflow on pull request since this workflow has permission to modify contents.
+on:
+  push:
+    branches:
+      - master
+      # Hack for testing (REMOVE)
+      - continuous-bench-attempt
+
+permissions:
+  # deployments permission to deploy GitHub pages website
+  deployments: write
+  # contents permission to update benchmark contents in gh-pages branch
+  contents: write
+
+jobs:
+  benchmark:
+
+    # Make sure an error doesn't mean we waste everything that has been compiled.
+    continue-on-error: true
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest]
+
+    name: Run Rust benchmark example
+    runs-on: ${{ matrix.os }}
+    steps:
+      # Setup Rust.
+      - uses: actions/checkout@v4
+      - run: rustup toolchain install stable --profile minimal --no-self-update
+
+      # Make sure to use cached compilation objects if they exist.
+      - uses: Swatinem/rust-cache@v2
+
+      # Run the benchmark and store to `results/tpch.txt`.
+      - name: Run benchmark
+        # (REMOVE) run everything instead of just q6
+        run: cargo bench --bench planner_bench tpch/q6/execution | tee results/tpch.txt
+
+      # Download the previous benchmark result from the cache (if it exists).
+      - name: Download previous benchmark data
+        uses: actions/cache@v4
+        with:
+          path: ./cache
+          key: ${{ runner.os }}-benchmark
+
+      # Run the `github-action-benchmark` action.
+      - name: Store benchmark result
+        uses: benchmark-action/github-action-benchmark@v1
+        with:
+          name: Rust Benchmark
+          tool: 'cargo'
+          output-file-path: results/tpch.txt
+          gh-pages-branch: gh-pages
+          external-data-json-path: cache/benchmark-data.json
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          auto-push: true
+          # Show alert with commit comment on detecting possible performance regression
+          alert-threshold: '125%'
+          summary-always: true
+          comment-on-alert: true
+          fail-on-alert: true
+          alert-comment-cc-users: '@connortsui20'