github-actions: add workflow for NDK build

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>

.github/workflows/ndk.yml

@@ -0,0 +1,15 @@
+name: NDK
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: CMake and NDK
+      run: |
+        cmake -DCMAKE_BUILD_TYPE=Debug -DENABLE_WERROR=ON -DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK/build/cmake/android.toolchain.cmake -B build
+        cmake --build build