Add CI?

.github/workflows/ci.yaml

@@ -0,0 +1,29 @@
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+name: CI
+
+jobs:
+  pre-commit:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+      - uses: pre-commit/action@v3.0.1
+
+  build-and-test:
+    needs: pre-commit
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Install Rust
+      run: |
+        curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+        source $HOME/.cargo/env
+    - name: Build
+      run: cargo build --verbose
+    - name: Run tests
+      run: cargo test --verbose