add repository URL to fix vsce package in CI

Author: heznpc

package.json

@@ -4,6 +4,10 @@
   "description": "A VS Code extension",
   "version": "0.1.0",
   "publisher": "my-publisher",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/heznpc/vscode-extension-starter"
+  },
   "engines": {
     "vscode": "^1.85.0"
   },