docs: add star history chart to README

- Included star history widget
- Updated README with new section
- Shows project's star growth

Author: programmersd21

README.md

@@ -54,6 +54,18 @@ Built with [Bubble Tea](https://github.com/charmbracelet/bubbletea) (TUI framewo
 
 ---
 
+## 🤩 Star History
+
+<a href="https://www.star-history.com/?repos=programmersd21%2Fkairo&type=date&legend=top-left">
+ <picture>
+   <source media="(prefers-color-scheme: dark)" srcset="https://api.star-history.com/chart?repos=programmersd21/kairo&type=date&theme=dark&legend=top-left" />
+   <source media="(prefers-color-scheme: light)" srcset="https://api.star-history.com/chart?repos=programmersd21/kairo&type=date&legend=top-left" />
+   <img alt="Star History Chart" src="https://api.star-history.com/chart?repos=programmersd21/kairo&type=date&legend=top-left" />
+ </picture>
+</a>
+
+---
+
 ## 📦 Installation
 
 ### Linux / macOS