Add vcpkg support

[Copilot]

• Understand the project structure and requirements
• Create vcpkg port structure (ports/ds directory)
  • Create vcpkg.json (port manifest)
  • Create portfile.cmake (simplified build instructions)
• Modify CMakeLists.txt to add install targets for vcpkg compatibility
  • Add GNUInstallDirs include
  • Keep LTO always enabled (default behavior preserved)
  • Add install targets for library and headers
  • Add CMake export for find_package support
• Test the build process
  • Verify library builds correctly
  • Verify install target works
  • Verify find_package works with installed library

Original prompt

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This section details on the original issue you should resolve

<issue_title>添加对vcpkg的支持</issue_title>
<issue_description>可能应该需要添加一个vcpkg的ports, 但我很多年没用过vcpkg了, 不知道近期是否有格式的更新.
为了对vcpkg添加支持, 可能还需要修改cmakelists.txt, 如果可以, 尽量保持现在这样的静态链接, 因为这个包很需要lto.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes 添加对vcpkg的支持 #61

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[Copilot]

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[hzhangxyz]

@copilot 不要使用lto这些开关, 让他保持默认行为就行.... 另外, ds-config.cmake是必须的么?如果不是必须的, 尽量少添加新的文件.

[Copilot]

@copilot 不要使用lto这些开关, 让他保持默认行为就行.... 另外, ds-config.cmake是必须的么?如果不是必须的, 尽量少添加新的文件.

Removed the DS_ENABLE_LTO option and DS_BUILD_EXAMPLES option - LTO is now always enabled as before. Also removed cmake/ds-config.cmake.in by using CMake's export directly to generate the config file, which is simpler and required for find_package() to work with vcpkg. (36280b7)