ci: set up base workflows for testing, linting and benchmarking

.github/workflows/bench.yml

@@ -0,0 +1,28 @@
+name: Benchmark
+
+on:
+  pull_request:
+
+jobs:
+  bench:
+    name: Benchmark
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          ref: ${{ github.base_ref }}
+          fetch-depth: 0
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Run benchmarks (base)
+        run: cargo bench --bench fmt -- --save-baseline base
+
+      - uses: actions/checkout@v6
+        with:
+          ref: ${{ github.head_ref }}
+          fetch-depth: 0
+
+      - name: Compare benchmarks
+        run: cargo bench --bench fmt -- --compare base

.github/workflows/build.yml

@@ -0,0 +1,19 @@
+name: Build
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Build
+        run: cargo build --release --verbose

.github/workflows/clippy.yml

@@ -0,0 +1,19 @@
+name: Clippy
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  clippy:
+    name: Clippy
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Run clippy
+        run: cargo clippy -- -D warnings

.github/workflows/test.yml

@@ -0,0 +1,19 @@
+name: Test
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Run tests
+        run: cargo test --verbose