Updated all network adapters' onEvent methods to be asynchronous and return Promises, ensuring consistent async event emission and handling. Adjusted related methods and event emission logic to properly await asynchronous operations, improving reliability for streaming, plugin, HTTP, and WebSocket event flows. Also improved error handling and messaging in stream and WebSocket actions.
Introduces new OneBot actions for streaming file upload and download, including chunked file transfer with memory/disk management and SHA256 verification. Adds CleanStreamTempFile, DownloadFileStream, UploadFileStream, and TestStreamDownload actions, updates action routing and network adapters to support streaming via HTTP and WebSocket, and provides Python test scripts for concurrent upload testing.
