Add unit tests to GitHub Actions

.github/workflows/tests.yml

@@ -0,0 +1,22 @@
+name: Tests
+
+on: [push, pull_request]
+
+jobs:
+  tests:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest]
+        build_type: [Release, Debug]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Configure CMake
+        run: cmake -S tests -B build_tests -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}
+
+      - name: Build
+        run: cmake --build build_tests --config ${{ matrix.build_type }}
+
+      - name: Run tests
+        run: ctest --test-dir build_tests --output-on-failure