fix: resolve VS Code extension icon path issue

- Updated icon path to use explicit relative path (./assets/icon.png)
- Added extension/assets/icon.png as workaround for VSCE path resolution
- This addresses the 'extension/assets/icon.png not found' error in CI

Author: thegdsks

extension/assets/icon.png

@@ -4,7 +4,7 @@
   "description": "Smart, structured, and beautiful git commits with AI assistance - by GLINR STUDIOS",
   "version": "1.0.3",
   "publisher": "glincker",
-  "icon": "assets/icon.png",
+  "icon": "./assets/icon.png",
   "engines": {
     "vscode": "^1.80.0"
   },