Update CI (#21)

Author: bombsimon

.github/workflows/rust.yml

@@ -12,8 +12,12 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
-    - name: Build
-      run: cargo build --verbose
-    - name: Run tests
-      run: cargo test --verbose
+      - uses: actions/checkout@v4
+      - name: Build
+        run: cargo build --verbose
+      - name: Check formatting
+        run: cargo fmt -- --check
+      - name: Check linting
+        run: cargo clippy --all-targets --all-features -- -D warnings
+      - name: Run tests
+        run: cargo test --verbose