docs: add Coplay sponsorship and logo to README

Author: msanatan

README.md

@@ -11,6 +11,14 @@
 
 Unity MCP acts as a bridge, allowing AI assistants (like Claude, Cursor) to interact directly with your Unity Editor via a local **MCP (Model Context Protocol) Client**. Give your LLM tools to manage assets, control scenes, edit scripts, and automate tasks within Unity.
 
+Proudly sponsored by [Coplay](https://www.coplay.dev)
+
+<h2 align="center">
+  <a href="https://www.coplay.dev">
+    <img src="logo.png" alt="Coplay Logo" width="100%">
+  </a>
+</h2>
+
 ## 💬 Join Our Community
 
 ### [Discord](https://discord.gg/y4p8KfzrN4)