chore(vscode-ext): sync package.json version to 2.0.0

Align main branch version with the published Marketplace release.
Other packages (superdoc, cli, react) already keep versions in sync
across branches.

Author: caio-pizzol

apps/vscode-ext/package.json

@@ -2,7 +2,7 @@
   "name": "superdoc-vscode-ext",
   "displayName": "SuperDoc - Word Document Editor",
   "description": "Open and edit Word documents (.docx) directly in VS Code using SuperDoc",
-  "version": "0.0.0",
+  "version": "2.0.0",
   "publisher": "superdoc-dev",
   "repository": "https://github.com/superdoc-dev/superdoc",
   "engines": {