add build CI workflow

.github/workflows/build.yml

@@ -0,0 +1,83 @@
+name: Build and test
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build-linux:
+    runs-on: ubuntu-24.04
+
+    strategy:
+      matrix:
+        compiler: [gcc-9, gcc-14, clang-9, clang-19]
+        include:
+          - compiler: gcc-9
+            cxx: g++-9
+            libcxx: libstdc++11
+            install: |
+              sudo apt install -y gcc-9 g++-9
+          - compiler: gcc-14
+            cxx: g++-14
+            libcxx: libstdc++11
+          - compiler: clang-9
+            cxx: clang++-9
+            libcxx: libc++
+            install: |
+              sudo apt-add-repository 'deb http://archive.ubuntu.com/ubuntu focal main universe'
+              sudo apt install -y clang-9 libc++-9-dev libc++abi-9-dev
+          - compiler: clang-19
+            cxx: clang++-19
+            libcxx: libc++
+            install: |
+              wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
+              sudo apt-add-repository 'deb http://apt.llvm.org/noble/ llvm-toolchain-noble-19 main'
+              sudo apt install -y clang-19 libc++-19-dev libc++abi-19-dev
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install dependencies
+        run: |
+          sudo apt update
+          ${{ matrix.install }}
+
+      - name: Build
+        env:
+          CC: ${{ matrix.compiler }}
+          CXX: ${{ matrix.cxx }}
+          LIBCXX: ${{ matrix.libcxx }}
+        run: |
+          python -m venv venv
+          source ./venv/bin/activate
+          pip install conan
+          source ~/.profile
+          conan config install --type dir ./.github/conan_config
+          conan install . -of=build --build=missing
+          cmake -B build -DSBEPP_BUILD_TESTS=ON -DSBEPP_SEPARATE_TESTS=OFF --preset conan-debug
+          cmake --build build --preset conan-debug --parallel $(nproc)
+
+      - name: Run tests
+        run: ctest --test-dir build --output-on-failure --parallel --build-config Debug
+
+  build-windows:
+    runs-on: windows-2022
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Build
+      run: |
+        python -m venv venv
+        .\venv\Scripts\activate
+        pip install conan
+        conan profile detect
+        conan profile show
+        conan install . -of=build --build=missing -s build_type=Debug
+        cmake -B build -DSBEPP_BUILD_TESTS=ON -DSBEPP_SEPARATE_TESTS=OFF --preset conan-default
+        $threads = (Get-CimInstance Win32_ComputerSystem).NumberOfLogicalProcessors
+        cmake --build build --preset conan-debug --parallel $threads
+
+    - name: Run tests
+      run: ctest --test-dir build --output-on-failure --parallel --build-config Debug