Feature: Embed web stories on landing page cards

[amovar18]

Description

This PR aims to embed web-stories in the cards of each of the landing pages.

Relevant Technical Choices

• Clicking on the web stories icon in the landing page will open a web story in a player format.

Testing Instructions

• Clone this branch
• In the terminal run npm i && npm run build:ext.
• In the browser, go to example.com.
• Now open PSAT in DevTools.
• Now in PSAT open any landing page which has cards.
• There should be a web story icon, click on it, and it will open a story in story player format.

Additional Information:

Screenshot/Screencast

ws.mov

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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. NA
• The QA of this PR is done by a member of the QA team (to be checked by QA).

Fixes #909

[mohdsayed]

Looks good now.