feat: add antialias (#68)

This PR turns on antialiasing on the PixiJS renderer.

Before:

![image](https://github.com/user-attachments/assets/9ef7c5fb-76ad-4489-a85d-7828735cf2cb)

After:

![image](https://github.com/user-attachments/assets/3f1c440b-c478-4714-a547-a1decf64272f)

Co-authored-by: Manuel Pol <[email protected]>

Author: MegaRedHand

src/index.ts

@@ -31,6 +31,7 @@ import PauseSvg from "./assets/pause-icon.svg";
     height: window.innerHeight,
     resolution: window.devicePixelRatio || 1,
     autoDensity: true,
+    antialias: true,
   });
 
   const canvasPlaceholder = document.getElementById("canvas");