Fix: Revise method to keep service worker alive.

[amovar18]

Description

This PR aims to add a better solution to keep the service worker alive than calling the chrome.storage.local.get.

Relevant Technical Choices

• The service worker sends data to the content script at a setInterval of 10 seconds and keeps the service worker alive.

Testing Instructions

Additional Information:

Screenshot/Screencast

---

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).