152 - added playwright config, tests and dev setup

[ri-pandey]

Description

Added Playwright test config, and some proof-of-concept tests.

Related Issue(s)

Closes #152

Changes Made

List the main changes made in this PR. Be as specific as possible.

• [ ] Feature added
• [ ] Bug fixed
• [x] Code refactored
• [x] Documentation updated
• [ ] Other changes: [describe]

Checklist

Before submitting this PR, please make sure that:

• [x] Your code passes linting and coding style checks.
• [x] Documentation has been updated to reflect the changes.
• [x] You have reviewed your own code and resolved any merge conflicts.
• [x] You have requested a review from at least one team member.
• [x] Any relevant issue(s) have been linked to this PR.

Additional Information

This PR contains the setup for Playwright, and some tests. The current set of tests asserts

1. role-specific features
2. the navigation guard intercepting attempts to access the app UI while logged out

This documentation explains the authentication bypass mechanism that's needed to make the tests pass, how to configure Playwright and how to setup your tests to run in a logged-out/logged-in state.

The only changes made to the application code are:

1. Adding data-testids to DOM elements, which is used by the tests.
2. Ignoring the ticket verification logic in CI environment.

[deepakduggirala]

Add the below to config/default.json. It makes it easier to add new configs under e2e key

"e2e": {
    "users": {
      "admin": {
        "username": ""
      },
      "operator": {
        "username": ""
      },
      "user": {
        "username": ""
      }
    }
  }```

[ri-pandey]

I have dockerized the tests so they can be more easily run on dev's machines. The instructions on how to do so have been updated.

I have also added an alert that displays the envrionment (pictured below). The alert is shown in logged-in as well as logged-out views. This is achieved by an unauthenticated route that simply returns the process.env.NODE_ENV that's set on the API-side.

The envs that this alert needs to enabled for can be configured in ui/config.js in property alertForEnvironments.