Adds Cypress E2E tests and GitHub Action Cypress workflow

[ftianli-amzn]

Issue #, if available:

Description of changes:

1. Adds Cypress E2E tests, which contains the following test cases:

• Monitor:
  • Create a monitor
  • Update a monitor by changing the name
  • Delete a monitor
  • Search a monitor
  • Add a trigger to the monitor
  • Add an action to the trigger
• Destination:
  • Create a destination
  • Update a destination by changing the name
  • Delete a destination
  • Search a destination
• Alert:
  • Alert can be in Active state
  • Alert can be in Acknowledged state
  • Alert can be in Completed state
  • Alert can be in Error state
  • Alert can be in Deleted state

2. Adds GitHub Action workflow to run E2E tests on pull requests

References of the code changes:

1. Adds cypress e2e tests and github action cypress workflow index-management-kibana-plugin#80
2. https://github.com/opendistro-for-elasticsearch/security-kibana-plugin/pull/172

Note:
This PR is a duplicated one of #158, for the GitHub Action workflow in the PR can not be triggered from other repo, I create this PR to test if the workflow works.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.