feat(devin-lang): update default icon to devin.svg #101

The default icon for the DevInIcons object has been updated from ai-copilot.svg to devin.svg, reflecting the project's branding.

Author: phodal

exts/devin-lang/src/main/kotlin/cc/unitmesh/language/DevInIcons.kt

@@ -5,5 +5,5 @@ import javax.swing.Icon
 
 object DevInIcons {
     @JvmField
-    val DEFAULT: Icon = IconLoader.getIcon("/icons/ai-copilot.svg", DevInIcons::class.java)
+    val DEFAULT: Icon = IconLoader.getIcon("/icons/devin.svg", DevInIcons::class.java)
 }