build: use @amzn namespace for private packages (#245)

Author: grant0417

packages/autocomplete/package.json

@@ -1,8 +1,7 @@
 {
-  "name": "autocomplete",
-  "version": "1.187.0",
-  "autocomplete-engine-version": "v9",
+  "name": "@amzn/autocomplete",
   "private": true,
+  "version": "1.0.0",
   "type": "module",
   "scripts": {
     "set-host": "fig settings developer.autocomplete.host http://localhost:3124",

packages/dashboard/package.json

@@ -1,7 +1,7 @@
 {
-  "name": "dashboard",
+  "name": "@amzn/dashboard",
   "private": true,
-  "version": "0.0.0",
+  "version": "1.0.0",
   "type": "module",
   "scripts": {
     "dev": "vite",