ci: clang-tidy: Add clang-tidy job

Experimental job to enable clang-tidy. This action should only run
against the changes made in the PR.

This closes bpftrace#2971.

.github/workflows/tidy.yml

@@ -0,0 +1,41 @@
+name: "Clang Tidy"
+
+on:
+  pull_request:
+    branches: [ "master" ]
+
+# Cancel previous run if a new one is started
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      pull-requests: write
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: DeterminateSystems/nix-installer-action@v4
+      - uses: DeterminateSystems/magic-nix-cache-action@v2
+
+      - name: Generate compile_commands.json and headers
+        run: |
+          mkdir $GITHUB_WORKSPACE/build && cd $GITHUB_WORKSPACE/build
+          nix develop --command cmake .. -DCMAKE_EXPORT_COMPILE_COMMANDS=1
+          nix develop --command make -j$(nproc)
+
+      - name: Run clang-tidy
+        uses: ZedThree/clang-tidy-review@v0.17.1
+        id: review
+        with:
+          build_dir: build
+          lgtm_comment_body: ""
+
+      - name: Fail job if comments posted
+        if: steps.review.outputs.total_comments > 0
+        run: exit 1