Test: setup first end2end test

[xinbenlv]

The test will start by launch a new MongoDB instnace / setup empty collections, then populate pre-defined test data. Then run the end2end test. And finally it will tear down the collections and turn off the MongDB instance.

During the process, screenshot will be shot, scored and diff with golden screenshots

Reference solution:

• https://codeburst.io/nuxt-unit-snapshot-testing-a3dc7cb79ec1
• https://www.cypress.io/ from https://github.com/jaeheonji/nuxt-ts-example