feat(stream): support using temporary files as large buffer

[j2rong4cn]

No description provided.

[Copilot]

Pull Request Overview

This PR adds support for using temporary files as large buffers in the stream package to improve memory efficiency when handling large files. The implementation introduces an interface-based approach for stream section readers and adds a file-based buffering strategy as an alternative to memory-based buffering.

• Introduces StreamSectionReaderIF interface to support multiple buffering strategies
• Adds file-based buffering using temporary files for large streams that exceed buffer limits
• Updates all driver implementations to use the new interface type instead of concrete types

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
internal/stream/util.go	Implements the new interface and file-based buffering strategy with temporary file support
drivers/teldrive/types.go	Updates type declarations to use the new interface
drivers/mediafire/util.go	Updates variable type to use interface
drivers/doubao/util.go	Updates variable type to use interface
drivers/189pc/utils.go	Updates variable type to use interface
drivers/123_open/upload.go	Updates variable type to use interface
drivers/123/upload.go	Updates variable type to use interface

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