Add CI for linting and testing

.github/workflows/ci.yml

@@ -0,0 +1,45 @@
+name: CI
+
+on:
+  pull_request:
+    branches: [main]
+  push:
+    branches: [main]
+
+jobs:
+  lint:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@v4
+
+      - name: Install the stable Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: stable
+          components: rustfmt, clippy
+
+      - name: Run cargo fmt
+        run: cargo fmt -- --check
+
+      - name: Run cargo clippy
+        run: cargo clippy --release -- -D warnings
+
+  test:
+    name: test - ${{ matrix.platform }}
+    runs-on: ${{ matrix.platform }}
+    strategy:
+      matrix:
+        platform: [ ubuntu-latest, macos-latest ]
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@v4
+
+      - name: Install the stable Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: stable
+
+      - name: Run cargo test
+        run: cargo test --release