chore: add continuous integration

.clang-format

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+Language: Cpp

.github/workflows/ci.yaml

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+name: Continuous Integration
+
+on:
+  - pull_request
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        os:
+          - macos-13
+          - ubuntu-22.04
+          - windows-2022
+    name: "Build ${{ matrix.os }}"
+    runs-on: "${{ matrix.os }}"
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3.5.2
+      - name: Setup Python
+        uses: actions/setup-python@v4.7.1
+        with:
+          python-version: "3.12.0"
+      - name: Setup Ninja
+        uses: ashutoshvarma/setup-ninja@v1.1
+        with:
+          version: "1.11.1"
+      - name: Install Meson
+        run: python3 -m pip install meson==1.2.1
+      - name: Configure project
+        run: meson setup build/
+      - name: Check formatting
+        if: ${{ runner.os == 'Linux' }}
+        run: ninja -C build/ clang-format-check
+      - name: Build project
+        run: ninja -C build/