Add a QUIC transport (feature-gated)

.github/workflows/rust.yml

@@ -23,27 +23,35 @@ jobs:
 
   clippy-lint:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        # Lint with the quic feature off (default) and on, so neither
+        # configuration regresses.
+        features: ["", "--features quic"]
     steps:
       - uses: actions/checkout@v4
       - name: Report cargo version
         run: cargo --version
       - name: Report Clippy version
         run: cargo clippy -- --version
       - name: Run Clippy Lints
-        run: cargo clippy -- -D warnings
+        run: cargo clippy ${{ matrix.features }} -- -D warnings
 
   build-and-test:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
         os: [ubuntu-latest]
+        # Build every target and run the tests with the quic feature off
+        # (default) and on.
+        features: ["", "--features quic"]
     steps:
       - uses: actions/checkout@v4
       - name: Report cargo version
         run: cargo --version
       - name: Report rustc version
         run: rustc --version
       - name: Build
-        run: cargo build --all-targets --verbose
+        run: cargo build --all-targets ${{ matrix.features }} --verbose
       - name: Run tests
-        run: cargo test --verbose
+        run: cargo test ${{ matrix.features }} --verbose