extension_api 0.0.8

自定义wasm plugin 扩展api
Documentation 
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interface process {
  use common.{env-vars};

  record command {
    /// bin name
    program: string,
    /// 当前目录
    current-dir: option<string>,
    /// 参数
    args: option<list<string>>,
    /// 环境变量
    envs: option<env-vars>,
  }

  record output {
    /// 退出码
    status: option<s32>,
    /// 输出
    stdout: list<u8>,
    /// 错误
    stderr: list<u8>,
  }
  /// 执行命令  
  run-command: func(cmd: command) -> result<output, string>;

}