ci: use cargo check for example checks

* Add asio-sys example checks on Linux and Windows.

* Replace per-example builds with `cargo check --examples` on macOS
and Android to speed up CI.

* In sanitizers workflow use `cargo +nightly check --examples` and
add a sanitizer run for the `beep` example.

Author: roderickvd

.github/workflows/platforms.yml

@@ -126,6 +126,12 @@ jobs:
           CPAL_ASIO_DIR: ${{ github.workspace }}/asio
         run: cargo test --all --all-features --verbose
 
+      - name: Check asio-sys examples
+        working-directory: asio-sys
+        env:
+          CPAL_ASIO_DIR: ${{ github.workspace }}/asio
+        run: cargo check --examples --verbose
+
   # Windows i686
   windows-x86:
     runs-on: windows-latest
@@ -156,6 +162,12 @@ jobs:
           CPAL_ASIO_DIR: ${{ github.workspace }}/asio
         run: cargo test --all --all-features --verbose
 
+      - name: Check asio-sys examples
+        working-directory: asio-sys
+        env:
+          CPAL_ASIO_DIR: ${{ github.workspace }}/asio
+        run: cargo check --examples --verbose
+
   # macOS ARM64
   macos:
     runs-on: macOS-latest
@@ -171,8 +183,8 @@ jobs:
       - name: Rust Cache
         uses: Swatinem/rust-cache@v2
 
-      - name: Build beep example
-        run: cargo build --example beep
+      - name: Check examples
+        run: cargo check --examples --verbose
 
       - name: Run tests (no features)
         run: cargo test --all --no-default-features --verbose
@@ -197,11 +209,7 @@ jobs:
           key: android
 
       - name: Check Android examples
-        run: |
-          cargo check --example beep --target armv7-linux-androideabi --verbose
-          cargo check --example enumerate --target armv7-linux-androideabi --verbose
-          cargo check --example feedback --target armv7-linux-androideabi --verbose
-          cargo check --example record_wav --target armv7-linux-androideabi --verbose
+        run: cargo check --examples --target armv7-linux-androideabi --verbose
 
       - name: Check Android project
         working-directory: examples/android

.github/workflows/sanitizers.yml

@@ -81,22 +81,30 @@ jobs:
             --lib --tests \
             --verbose
 
-      - name: Build examples with sanitizer
+      - name: Check all examples with sanitizer
         run: |
-          cargo +nightly build \
+          cargo +nightly check \
             -Zbuild-std \
             --target ${{ matrix.target }} \
             --examples \
             --verbose
 
-      - name: Run enumerate example with sanitizer
+      - name: Build and run enumerate example with sanitizer
         run: |
           cargo +nightly run \
             -Zbuild-std \
             --target ${{ matrix.target }} \
             --example enumerate \
             --verbose
 
+      - name: Build and run beep example with sanitizer
+        run: |
+          cargo +nightly run \
+            -Zbuild-std \
+            --target ${{ matrix.target }} \
+            --example beep \
+            --verbose
+
       - name: Upload sanitizer logs
         if: failure()
         uses: actions/upload-artifact@v4