ci: install spdlog on windows via vcpkg with chainload toolchain

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: 2 people

.github/workflows/windows.yml

@@ -25,10 +25,12 @@ jobs:
             standalone: OFF
     steps:
       - uses: actions/checkout@v4
+      - name: Install spdlog via vcpkg
+        run: vcpkg install spdlog:${{ matrix.arch == 'x64' && 'x64-windows' || 'x86-windows' }}
       - name: Build Visual Studio
         if: ${{ matrix.generate == 'Visual Studio 17 2022' }}
         run: |
-          cmake -S . -B "build/${{ matrix.arch }}" -G "${{ matrix.generate }}" -DCMAKE_TOOLCHAIN_FILE="cmake/toolchain/${{ matrix.toolchain }}.cmake" -DCMAKE_GENERATOR_PLATFORM=${{ matrix.arch }} -DCMAKE_BUILD_TYPE:STRING=${{ matrix.config }} -DPRISM_STANDALONE=${{ matrix.standalone }}
+          cmake -S . -B "build/${{ matrix.arch }}" -G "${{ matrix.generate }}" -DCMAKE_TOOLCHAIN_FILE="C:/vcpkg/scripts/buildsystems/vcpkg.cmake" -DVCPKG_CHAINLOAD_TOOLCHAIN_FILE="${{ github.workspace }}/cmake/toolchain/${{ matrix.toolchain }}.cmake" -DCMAKE_GENERATOR_PLATFORM=${{ matrix.arch }} -DCMAKE_BUILD_TYPE:STRING=${{ matrix.config }} -DPRISM_STANDALONE=${{ matrix.standalone }}
           cmake --build ./build/${{ matrix.arch }}
       - name: Setup Variables
         if: ${{ matrix.generate == 'Ninja' }}
@@ -38,7 +40,7 @@ jobs:
       - name: Build Ninja
         if: ${{ matrix.generate == 'Ninja' }}
         run: |
-          cmake -S . -B "build/${{ matrix.arch }}" -G "${{ matrix.generate }}" -DCMAKE_TOOLCHAIN_FILE="cmake/toolchain/${{ matrix.toolchain }}.cmake" -DCMAKE_BUILD_TYPE:STRING=${{ matrix.config }} -DPRISM_STANDALONE=${{ matrix.standalone }}
+          cmake -S . -B "build/${{ matrix.arch }}" -G "${{ matrix.generate }}" -DCMAKE_TOOLCHAIN_FILE="C:/vcpkg/scripts/buildsystems/vcpkg.cmake" -DVCPKG_CHAINLOAD_TOOLCHAIN_FILE="${{ github.workspace }}/cmake/toolchain/${{ matrix.toolchain }}.cmake" -DCMAKE_BUILD_TYPE:STRING=${{ matrix.config }} -DPRISM_STANDALONE=${{ matrix.standalone }}
           cmake --build ./build/${{ matrix.arch }}
       - name: Publish packaged artifacts
         if: ${{ matrix.config == 'Release' && matrix.generate == 'Visual Studio 17 2022' && matrix.standalone == 'ON' }}