Add Buy Me a Coffee button widget to README

Author: Sanjaya-Danushka

README.md

@@ -4,6 +4,8 @@ NeoArch is a modern, user-friendly package manager designed specifically for Arc
 
 website: https://sanjaya-danushka.github.io/Neoarch/
 
+<script type="text/javascript" src="https://cdnjs.buymeacoffee.com/1.0.0/button.prod.min.js" data-name="bmc-button" data-slug="sanjayadanushka" data-color="#FFDD00" data-emoji=""  data-font="Cookie" data-text="Buy me a coffee" data-outline-color="#000000" data-font-color="#000000" data-coffee-color="#ffffff" ></script>
+
 preview: https://drive.google.com/file/d/17cfs7VEui4zfFhghsIWBp2duqpPjWtEQ/view?usp=sharing
 
 <img width="1229" height="851" alt="Screenshot_20251111_185003" src="https://github.com/user-attachments/assets/1539d8eb-7d18-41e9-bc16-96ff061c1b4a" />