add icons from pkg

Author: SaraVieira

packages/app/package.json

@@ -127,6 +127,7 @@
     "@babel/preset-env": "^7.4.2",
     "@cerebral/http": "^4.0.0",
     "@cerebral/mobx-state-tree": "^3.0.0",
+    "@codesandbox/template-icons": "^0.2.2",
     "@emmetio/codemirror-plugin": "^0.3.5",
     "@svgr/core": "^2.4.1",
     "@vue/babel-preset-app": "^3.2.0",