Add CI

.github/actions/build-and-test/action.yml

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+name: Build and test
+description: "Build the project and run tests via CMake"
+
+runs:
+  using: "composite"
+  steps:
+    - name: Build
+      run: cmake --build '${{github.workspace}}/build' --parallel "$(nproc)"
+      shell: bash
+
+    - name: Test
+      working-directory: '${{github.workspace}}/build'
+      run: |
+        # https://github.com/DiligentGraphics/github-action/commit/d2f7990b16def1efa337e5cc2fc8fa22b6fae55d
+        PATH="/c/mingw64/bin:$PATH"
+        ctest --output-on-failure -j"$(nproc)"
+      shell: bash

.github/actions/cmake/action.yml

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+name: Setup CMake
+description: "Invoke CMake and generate build files"
+inputs:
+  additional_cmake_args:
+    description: "Additional args to pass to CMake"
+    default: ""
+
+runs:
+  using: "composite"
+  steps:
+    # Linux deps
+    - name: Install/cache clazy, and doctest
+      if: runner.os != 'Windows'
+      uses: awalsh128/[email protected]
+      with:
+        packages: doctest-dev clazy
+        version: 1.0
+
+    # Windows deps
+    - name: Install Windows deps
+      if: runner.os == 'Windows'
+      run: |
+        vcpkg install doctest:x64-mingw-dynamic
+        echo cmake_extra_args="'-DCMAKE_TOOLCHAIN_FILE=$VCPKG_INSTALLATION_ROOT/scripts/buildsystems/vcpkg.cmake' '-DMINGW=ON' '-G MinGW Makefiles'" >> "$GITHUB_ENV"
+      shell: bash
+
+    - name: ccache
+      uses: hendrikmuhs/[email protected]
+      with:
+        key: ${{ github.job }}
+
+    - name: Configure CMake
+      run: |
+        CFLAGS="-Werror ${CFLAGS}" \
+        CXXFLAGS="-Werror ${CXXFLAGS}" \
+        cmake \
+        -S '${{github.workspace}}' \
+        -B '${{github.workspace}}/build' \
+        -DCMAKE_BUILD_TYPE=Release \
+        -DCMAKE_C_COMPILER_LAUNCHER=ccache \
+        -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
+        -DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
+        ${{ env.cmake_extra_args }} \
+        ${{ inputs.additional_cmake_args }}
+      shell: bash

.github/actions/run-linter/action.yml

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+name: run-linter
+description: "Run a linter on all changed files"
+inputs:
+  lint_program_with_args:
+    description: "Which program to run"
+    required: true
+
+runs:
+  using: "composite"
+  steps:
+    - uses: ./.github/actions/cmake
+
+    - uses: mjp41/workaround8649@c8550b715ccdc17f89c8d5c28d7a48eeff9c94a8
+      if: runner.os == 'Linux'
+      with:
+        os: ubuntu-latest
+
+    - name: Copy compile_commands.json
+      shell: bash
+      run: cp build/compile_commands.json compile_commands.json
+
+    - name: Run the linter
+      shell: bash
+      run: find -name '*.cpp' | parallel --verbose --jobs "$(nproc)" --plus _=[{#}/{##}] ${{ inputs.lint_program_with_args }} {}

.github/workflows/lint.yml

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+# vim: sw=2
+name: Lint
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  clang-tidy:
+    name: clang-tidy / Ubuntu 22.04
+    runs-on: ubuntu-22.04
+    env:
+      CC: clang-15
+      CXX: clang++-15
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Run clang-tidy
+        uses: ./.github/actions/run-linter
+        with:
+          lint_program_with_args: clang-tidy-15 --quiet --warnings-as-errors=*
+
+  clazy:
+    name: clazy / Ubuntu 22.04
+    runs-on: ubuntu-22.04
+    env:
+      CC: clang-15
+      CXX: clang++-15
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Run clazy
+        uses: ./.github/actions/run-linter
+        with:
+          lint_program_with_args: clazy-standalone --checks=level1,no-fully-qualified-moc-types,no-non-pod-global-static,no-range-loop-detach

.github/workflows/test.yml

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+# vim: sw=2
+name: Test
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  ubuntu-qt5:
+    name: Qt 5.15.2 / Ubuntu 22.04
+    runs-on: ubuntu-22.04
+    env:
+      CFLAGS: -fsanitize=address,undefined
+      CXXFLAGS: -fsanitize=address,undefined
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup CMake
+        uses: ./.github/actions/cmake
+
+      - name: Build and test
+        uses: ./.github/actions/build-and-test
+
+  ubuntu-qt6:
+    name: Qt 6.5.0 / Ubuntu 22.04
+    runs-on: ubuntu-22.04
+    env:
+      CFLAGS: -fsanitize=address,undefined
+      CXXFLAGS: -fsanitize=address,undefined
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup CMake
+        uses: ./.github/actions/cmake
+
+      - name: Build and test
+        uses: ./.github/actions/build-and-test
+
+  windows:
+    name: Qt 6.5.0 / Windows
+    runs-on: windows-2022
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup CMake
+        uses: ./.github/actions/cmake
+        with:
+          additional_cmake_args: |
+            -DCMAKE_RUNTIME_OUTPUT_DIRECTORY='${{github.workspace}}/build/bin' \
+            -DCMAKE_LIBRARY_OUTPUT_DIRECTORY='${{github.workspace}}/build/bin'
+
+      - name: Build and test
+        uses: ./.github/actions/build-and-test