ci: add clippy job

Signed-off-by: Renato Westphal <[email protected]>

.github/workflows/ci.yaml

@@ -4,6 +4,8 @@ on: [push, pull_request]
 
 env:
   CARGO_TERM_COLOR: always
+  # Make sure CI fails on all warnings, including Clippy lints
+  RUSTFLAGS: "-Dwarnings"
 
 jobs:
   fmt:
@@ -22,6 +24,17 @@ jobs:
             exit 1
           fi
 
+  clippy_check:
+    name: Linter Check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@nightly
+        with:
+          components: clippy
+      - name: Run Clippy
+        run: cargo clippy
+
   test:
     name: Tests and Coverage Report
     env: