cpp vscode vcpkg配置

1. 需要配置好项目的setting.json，添加vcpkg和cmake的tookchain

{
    "files.associations": {
        "iostream": "cpp",
        "cstring": "cpp"
    },
    "cmake.sourceDirectory": "${workspaceFolder}/src",
    "cmake.configureSettings": {
        "CMAKE_TOOLCHAIN_FILE": "/root/software/vcpkg/scripts/buildsystems/vcpkg.cmake",
        "VCPKG_TARGET_TRIPLET": "x64-linux"
    }
}

2. 使用vcpkg安装第三方包
3. 按照vcpkg的提示，添加包到cmakelist文件