设置默认终端

1. Ctrl + Shift + P -> Terminal: Select Default Profile -> Command Prompt
2. settings.json

   {
        "terminal.integrated.profiles.windows": {
            "Command Prompt": {
                "path": "${env:windir}\\System32\\cmd.exe"
            }
        },
        "terminal.integrated.defaultProfile.windows": "Command Prompt"
    }