Add GHA lint job

.github/workflows/ci.yml

@@ -0,0 +1,29 @@
+name: CI
+
+on:
+  push:
+    # Avoid duplicate builds on PRs.
+    branches:
+      - main
+  pull_request:
+
+permissions:
+  contents: read
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Update Rust toolchain
+        run: rustup update
+      - name: Rust Cache
+        uses: Swatinem/[email protected]
+      - name: Clippy
+        run: cargo clippy --all-targets --locked -- --deny warnings
+      - name: rustfmt
+        run: cargo fmt -- --check