feat: expect helper

[kobenguyent]

Motivation/Description of the PR

• Description of this PR, which problem it solves
• Resolves #issueId (if applicable).

Type of change

• 🚀 New functionality

Checklist:

• Tests have been added
• Documentation has been added (Run npm run docs)
• Lint checking (Run npm run lint)
• Local tests are passed (Run npm test)

[DavertMik]

@kobenguyent could you show the output with --steps?
I assume the "expect" lines would be duplicated.

[kobenguyent]

@kobenguyent could you show the output with --steps? I assume the "expect" lines would be duplicated.

Thanks @DavertMik. Pushed the fix

My --
  Assert
    I am on page "https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/POST"
    I grab current url 
    I expect "{"a":1}" to equal "{"b":1}"
  ✖ FAILED in 598ms


-- FAILURES:

  1) My
       Assert:

      expected { a: 1 } to equal { b: 1 }
      + expected - actual

       {
      -  "a": 1
      +  "b": 1
       }
      
      at ExpectHelper.expectEqual (node_modules/codeceptjs/lib/helper/ExpectHelper.js:21:57)
      at Step.run (node_modules/codeceptjs/lib/step.js:122:47)
      at /Users/t/Downloads/highlight_error_sample/node_modules/codeceptjs/lib/actor.js:135:23
  
  Scenario Steps:
  - I.expectEqual({"a":1}, {"b":1}) at Test.<anonymous> (./regression_test.js:28:7)
  - I.grabCurrentUrl() at Test.<anonymous> (./regression_test.js:27:25)
  - I.amOnPage("https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/POST") at Test.<anonymous> (./regression_test.js:26:7)
  
  Artifacts:
  - screenshot: /Users/t/Downloads/highlight_error_sample/output/Assert.failed.png
  - video: /Users/tDownloads/highlight_error_sample/output/videos/c7786dd7-c926-430f-a860-be8039ac09bf_Assert.failed.webm