feat: Allow Nodejs async fetch

[t-yuki]

In this PR, we add new syscall rules to allow use of fetch async function in Nodejs runtime.

Also, Code template in dify api should be replaced by:

        runner_script = dedent(
            f"""
            // declare main function
            {cls._code_placeholder}
            
            // decode and prepare input object
            var inputs_obj = JSON.parse(Buffer.from('{cls._inputs_placeholder}', 'base64').toString('utf-8'))
            
            // execute main function
            async function wrap() {"{"}
            var output_obj = await main(inputs_obj)
            
            // convert output to json and print
            var output_json = JSON.stringify(output_obj)
            var result = `<<RESULT>>${{output_json}}<<RESULT>>`
            console.log(result)
            {"}"}
            wrap()
            """
        )

see: https://github.com/langgenius/dify/blob/7f095bdc42bc9482304c4e4f937d9b72b3aa9759/api/core/helper/code_executor/javascript/javascript_transformer.py#L9

Note that, arm64 arch support is not tested yet.

[t-yuki]

Well, the test for malicious commands is failing. We must distinglish nodejs internal fork and child_process spawn.