ci: migrate from Cirrus to GitHub Actions

.github/workflows/ci.yml

@@ -0,0 +1,99 @@
+name: "CI"
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 0 * * 1" # At 00:00 on Monday
+
+jobs:
+  cmake:
+    name: ${{ matrix.artifact_name }}
+    runs-on: ${{ matrix.image_name }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          # region Linux Arm64
+          - artifact_name: linux-arm64-debug-nojit
+            image_name: ubuntu-24.04-arm
+            build_type: Debug
+            static_library: false
+            disable_jit: true
+
+          - artifact_name: linux-arm64-test-nojit
+            image_name: ubuntu-24.04-arm
+            build_type: RelWithDebInfo
+            static_library: false
+            disable_jit: true
+
+          - artifact_name: linux-arm64-release-nojit
+            image_name: ubuntu-24.04-arm
+            build_type: Release
+            static_library: false
+            disable_jit: true
+          # endregion
+
+          # region MacOS Arm64
+          - artifact_name: macos-arm64-debug-nojit
+            image_name: macos-14
+            build_type: Debug
+            static_library: true
+            disable_jit: true
+
+          - artifact_name: macos-arm64-test-nojit
+            image_name: macos-14
+            build_type: RelWithDebInfo
+            static_library: false
+            disable_jit: true
+
+          - artifact_name: macos-arm64-release-nojit
+            image_name: macos-14
+            build_type: Release
+            static_library: true
+            disable_jit: true
+          # endregion
+
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v7
+
+      - name: Install Linux Dependencies
+        if: runner.os == 'Linux'
+        run: sudo apt-get install -y ninja-build clang libicu-dev
+
+      - name: Install macOS Dependencies
+        if: runner.os == 'macOS'
+        run: brew install ninja icu4c
+
+      - name: Create build directories
+        run: mkdir -p build
+
+      - name: CMake
+        working-directory: build
+        run: |
+          cmake -GNinja \
+            -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} \
+            ${{ case(matrix.static_library, '-DSTATIC_LIBRARY=ON', '') }} \
+            ${{ case(matrix.disable_jit, '-DDISABLE_JIT=ON', '') }} \
+            ${{ case(runner.os == 'macOS', '-DICU_INCLUDE_PATH=/opt/homebrew/opt/icu4c/include', '') }} \
+            -DCMAKE_CXX_COMPILER=clang++ \
+            -DCMAKE_C_COMPILER=clang \
+            ..
+
+      - name: Build
+        working-directory: build
+        run: ninja
+
+      - name: Upload build artifact
+        uses: actions/upload-artifact@v7
+        with:
+          name: ${{ matrix.artifact_name }}
+          path: build/bin/
+          if-no-files-found: error
+
+      - name: Test
+        working-directory: build
+        run: ninja check