[APPS] Add vite dev server middleware for local backend function testing

Author: sdkennedy2

packages/plugins/apps/package.json

@@ -27,7 +27,8 @@
         "glob": "11.1.0",
         "jszip": "3.10.1",
         "pretty-bytes": "5.6.0",
-        "esbuild": "0.25.8"
+        "esbuild": "0.25.8",
+        "vite": "^6.0.0"
     },
     "devDependencies": {
         "typescript": "5.4.3"