Feature: Show exempted cookies in extension

[amovar18]

Description

This PR aims to show the cookie exemption reason from the Chrome DevTools Protocol. These are the cookies which were to be blocked but were exempted due to some reasons.

Relevant Technical Choices

• Use the CDP extraInfo events to get the cookie exemption reasons:
  • Network.requestWillBeSentExtraInfo.associatedCookies
• Network.responseReceivedExtraInfo.exemptedCookies

Testing Instructions

• Clone this branch.
• Go to the terminal and run npm start.
• Open the browser with 3pcd flags enabled.
• Load the extension and open edition.cnn.com.
• Go to PSAT in DevTools and open the cookie table.
• Allow list a 3rd party cookie and go to the cookies landing page.
• In the cookies landing page you will see and exempted cookies section with the count and the reasoning.

Additional Information:

• Network.CookieExemptionReason

Screenshot/Screencast

LandingPage:

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Checklist

• I have thoroughly tested this code to the best of my abilities.
• I have reviewed the code myself before requesting a review.
• This code is covered by unit tests to verify that it works as intended.
• The QA of this PR is done by a member of the QA team (to be checked by QA).

Fixes #503

[mohdsayed]

@amovar18 Please resolve conflicts and add some test coverage