1.1.5

1. Improved the Content.overwrite and Content.append methods, and adjusted the related code structure.
2. Added two deprecated methods (read and write) in the File class to enhance applicability.
3. Improved a few type annotations and corrected a code standardization error.

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1. 改进 Content.overwrite 和 Content.append 方法，并调整了相关代码结构。
2. 为提高适用性，在 File 类中增加了两个（read 和 write）标记为弃用的方法。
3. 改进少量类型注解并纠正了一处代码规范性错误。