[demo-package][s]: add demo package to template to test npm and yarn install

packages/create-portal-app/templates/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "Datahub",
+  "version": "1.0.0",
+  "description": "Create Portal App CLI",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "chalk": "^4.1.0"
+  }
+}