add tpch benchmark workflow

.github/workflows/tpch.yaml

@@ -0,0 +1,48 @@
+name: Rust TPC-H Benchmarks
+
+# Do not run this workflow on pull request since this workflow has permission to modify contents.
+on:
+  push:
+    branches:
+      - main
+      # 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:
+    name: Run Rust benchmark example
+    runs-on: ubuntu-latest
+    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 `output.txt`.
+      - name: Run benchmark
+        run: cargo bench --bench planner_bench tpch/q6/ -- --output-format bencher | tee output.txt
+
+      # 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: output.txt
+          gh-pages-branch: gh-pages
+          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"