fix: include version marker in workspace

close #772

Author: yyx990803

package.json

@@ -2,7 +2,8 @@
   "private": true,
   "workspaces": [
     "packages/@vue/*",
-    "packages/test/*"
+    "packages/test/*",
+    "packages/vue-cli-version-marker"
   ],
   "scripts": {
     "test": "node scripts/test.js",