Update README.md

Author: laolarou726

README.md

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 # ProcessorLatencyTool
 
+![GitHub](https://img.shields.io/github/license/laolarou726/ProcessorLatencyTool?logo=github&style=for-the-badge)
+![Maintenance](https://img.shields.io/maintenance/yes/2025?logo=diaspora&style=for-the-badge)
+![GitHub commit activity](https://img.shields.io/github/commit-activity/m/laolarou726/ProcessorLatencyTool?style=for-the-badge)
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+
 This is a simple tool used to test the latency of the CPU. Fully cross-platform support. Powered by AvaloniaUI and managed C#.
 
 ![image](https://github.com/user-attachments/assets/eb4fab89-cc53-4fe8-912a-7ab6fbea9a44)