Release 2.3.0

Full Changelog: 2.2...2.3
本次更新：

1. FTS可以即时更改文件存放路径
2. 为每次传输引入session，避免了一些并发相关问题
3. 在测速功能中新增了上行带宽和下行带宽测速
4. 优化了进度条的展示
5. 重构了部分代码以及优化了一些算法和功能
6. 更新了程序构建相关的内容，使自主构建变得更加简单
7. 修复了部分Bug

This update:

1. FTS can immediately change the file storage path
2. Introduce session for each transmission to avoid some concurrency-related issues
3. Added Uplink Bandwidth and Downlink Bandwidth test to the speed test function
4. Optimized the display of progress bar
5. Refactored some codes and optimized some algorithms and functions
6. Updated content related to program build to make independent build easier
7. Fixed some bugs